From 2d4b3a9a6914b93081081c70db2c9d9d1f6212b0 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Fri, 5 Dec 2025 01:37:21 +0100
Subject: [PATCH 01/24] enable Carbon rector

---
 .rector.php                                   |  2 +-
 app/Mage.php                                  |  3 ++-
 .../Mage/AdminNotification/Model/Feed.php     |  8 ++++---
 .../Block/Customer/Edit/Tab/View.php          |  4 +++-
 .../Mage/Adminhtml/Block/Dashboard/Graph.php  |  4 +++-
 .../Block/Sales/Transactions/Detail.php       |  4 +++-
 .../Block/Sitemap/Grid/Renderer/Time.php      |  7 +++---
 .../Block/System/Config/Form/Field/Import.php |  4 +++-
 .../Adminhtml/Model/Sales/Order/Create.php    |  4 +++-
 .../Adminhtml/Model/Sales/Order/Random.php    |  4 +++-
 .../Model/System/Config/Source/Date/Short.php | 10 ++++----
 .../controllers/CustomerController.php        |  6 +++--
 .../Sales/Order/ShipmentController.php        |  4 +++-
 .../Config/System/StorageController.php       |  6 +++--
 .../controllers/System/StoreController.php    |  4 +++-
 app/code/core/Mage/Api/Model/Session.php      |  6 +++--
 .../Authorizenet/Model/Directpost/Request.php |  4 +++-
 app/code/core/Mage/Captcha/Model/Observer.php |  4 +++-
 .../core/Mage/Captcha/Model/Resource/Log.php  |  4 +++-
 app/code/core/Mage/Captcha/Model/Zend.php     |  6 +++--
 .../Model/Product/Option/Type/Date.php        | 12 ++++++----
 .../core/Mage/CatalogIndex/Model/Indexer.php  |  6 +++--
 .../Model/Resource/Aggregation.php            |  4 +++-
 .../Mage/CatalogRule/Model/Resource/Rule.php  | 10 ++++----
 app/code/core/Mage/CatalogRule/Model/Rule.php |  4 +++-
 .../Model/Rule/Condition/Product.php          |  4 +++-
 .../Checkout/Model/Api/Resource/Customer.php  |  4 +++-
 .../core/Mage/Checkout/Model/Type/Onepage.php |  4 +++-
 .../Mage/Cms/Model/Wysiwyg/Images/Storage.php |  4 +++-
 app/code/core/Mage/Core/Block/Html/Date.php   |  4 +++-
 .../Mage/Core/Controller/Front/Action.php     |  4 +++-
 .../Mage/Core/Controller/Varien/Action.php    |  4 +++-
 app/code/core/Mage/Core/Helper/Data.php       |  8 ++++---
 app/code/core/Mage/Core/Model/Cookie.php      |  3 ++-
 app/code/core/Mage/Core/Model/Date.php        | 12 ++++++----
 app/code/core/Mage/Core/Model/Locale.php      |  8 ++++---
 .../Core/Model/Session/Abstract/Varien.php    |  5 ++--
 app/code/core/Mage/Cron/Model/Observer.php    | 24 ++++++++++---------
 app/code/core/Mage/Cron/Model/Schedule.php    |  6 +++--
 .../Mage/Customer/Model/Resource/Customer.php |  4 +++-
 .../controllers/AccountController.php         |  7 +++---
 .../Mage/Dataflow/Model/Convert/Iterator.php  |  6 +++--
 app/code/core/Mage/Dataflow/Model/Profile.php |  4 +++-
 .../Mage/Dataflow/Model/Resource/Profile.php  |  6 +++--
 .../Model/Resource/Profile/History.php        |  4 +++-
 .../Mage/Eav/Model/Attribute/Data/Date.php    | 12 ++++++----
 .../core/Mage/ImportExport/Model/Export.php   |  4 +++-
 .../Model/Import/Entity/Abstract.php          |  4 +++-
 .../Model/Import/Entity/Customer.php          |  6 +++--
 .../Model/Import/Entity/Customer/Address.php  |  4 +++-
 .../Model/Import/Entity/Product.php           |  6 +++--
 app/code/core/Mage/Index/Model/Event.php      |  4 +++-
 app/code/core/Mage/Index/Model/Lock.php       |  4 +++-
 app/code/core/Mage/Index/Model/Observer.php   |  4 +++-
 .../Mage/Index/Model/Resource/Process.php     | 12 ++++++----
 .../Mage/Install/Model/Installer/Config.php   |  6 +++--
 app/code/core/Mage/Log/Model/Aggregation.php  | 12 ++++++----
 .../Log/Model/Resource/Visitor/Online.php     |  4 +++-
 .../core/Mage/Log/Model/Visitor/Online.php    |  4 +++-
 app/code/core/Mage/Oauth/Model/Consumer.php   |  4 +++-
 .../core/Mage/Oauth/Model/Resource/Nonce.php  |  4 +++-
 .../core/Mage/Oauth/Model/Resource/Token.php  |  4 +++-
 app/code/core/Mage/Oauth/Model/Server.php     |  4 +++-
 app/code/core/Mage/Payment/Block/Form/Cc.php  |  4 +++-
 app/code/core/Mage/Payment/Model/Config.php   |  4 +++-
 .../Mage/Payment/Model/Recurring/Profile.php  |  8 ++++---
 app/code/core/Mage/Paypal/Model/Cert.php      |  4 +++-
 app/code/core/Mage/Paypal/Model/Express.php   |  4 +++-
 .../Mage/Paypal/Model/Express/Checkout.php    |  4 +++-
 .../core/Mage/Persistent/Model/Session.php    |  6 +++--
 app/code/core/Mage/Reports/Helper/Data.php    |  6 +++--
 .../Entity/Summary/Collection/Abstract.php    |  6 +++--
 .../Model/Resource/Report/Abstract.php        |  4 +++-
 .../Model/Resource/Report/Collection.php      |  4 +++-
 app/code/core/Mage/Reports/Model/Test.php     | 12 ++++++----
 .../core/Mage/Rss/Block/Catalog/Salesrule.php |  4 +++-
 app/code/core/Mage/Rss/Block/Order/New.php    |  4 +++-
 .../Rule/Model/Condition/Product/Abstract.php |  8 ++++---
 app/code/core/Mage/Rule/Model/Environment.php |  4 +++-
 app/code/core/Mage/Sales/Model/Observer.php   |  4 +++-
 .../Mage/Shipping/Block/Tracking/Popup.php    |  6 +++--
 .../Mage/Tag/Model/Resource/Tag/Relation.php  |  4 +++-
 app/code/core/Mage/Tag/Model/Tag.php          |  4 +++-
 .../Model/Shipping/Carrier/Dhl/Abstract.php   |  8 ++++---
 .../Shipping/Carrier/Dhl/International.php    |  4 +++-
 .../Mage/Usa/Model/Shipping/Carrier/Fedex.php | 22 +++++++++--------
 .../catalog/category/checkboxes/tree.phtml    |  2 +-
 .../template/oauth/authorize/button.phtml     |  2 +-
 .../template/oauth/authorize/confirm.phtml    |  2 +-
 .../template/oauth/authorize/form/login.phtml |  2 +-
 .../template/oauth/authorize/reject.phtml     |  2 +-
 .../widget/form/element/gallery.phtml         |  2 +-
 .../default/template/customer/orders.phtml    |  2 +-
 .../default/default/template/page.phtml       |  2 +-
 get.php                                       |  4 +++-
 lib/Mage/Cache/Backend/File.php               | 12 ++++++----
 lib/Varien/Cache/Backend/Database.php         | 12 ++++++----
 lib/Varien/Date.php                           |  8 ++++---
 lib/Varien/Db/Adapter/Mysqli.php              |  6 +++--
 lib/Varien/Event/Observer/Cron.php            |  4 +++-
 lib/Varien/Io/File.php                        |  4 +++-
 .../Mage/Core/Helper/DataTrait.php            |  7 +++---
 102 files changed, 375 insertions(+), 197 deletions(-)

diff --git a/.rector.php b/.rector.php
index 5dbfead5689..25e7ced4de2 100644
--- a/.rector.php
+++ b/.rector.php
@@ -152,7 +152,7 @@
             instanceOf: true,
             earlyReturn: true,
             strictBooleans: false,
-            carbon: false,
+            carbon: true,
             rectorPreset: true,
             phpunitCodeQuality: true,
             doctrineCodeQuality: false,
diff --git a/app/Mage.php b/app/Mage.php
index fb3f012b9e0..89a11a3bae9 100644
--- a/app/Mage.php
+++ b/app/Mage.php
@@ -7,6 +7,7 @@
  * @package    Mage
  */
 
+use Carbon\Carbon;
 use Monolog\Formatter\LineFormatter;
 use Monolog\Handler\StreamHandler;
 use Monolog\Level;
@@ -857,7 +858,7 @@ public static function isInstalled($options = [])
             if (is_readable($localConfigFile)) {
                 $localConfig = simplexml_load_file($localConfigFile);
                 date_default_timezone_set('UTC');
-                if (($date = $localConfig->global->install->date) && strtotime((string) $date)) {
+                if (($date = $localConfig->global->install->date) && Carbon::parse((string) $date)->getTimestamp()) {
                     self::$_isInstalled = true;
                 }
             }
diff --git a/app/code/core/Mage/AdminNotification/Model/Feed.php b/app/code/core/Mage/AdminNotification/Model/Feed.php
index b59315b9a92..0bcbd4ba49e 100644
--- a/app/code/core/Mage/AdminNotification/Model/Feed.php
+++ b/app/code/core/Mage/AdminNotification/Model/Feed.php
@@ -7,6 +7,8 @@
  * @package    Mage_AdminNotification
  */
 
+use Carbon\Carbon;
+
 /**
  * AdminNotification Feed model
  *
@@ -55,7 +57,7 @@ public function getFeedUrl()
      */
     public function checkUpdate()
     {
-        if (($this->getFrequency() + $this->getLastUpdate()) > time()) {
+        if (($this->getFrequency() + $this->getLastUpdate()) > Carbon::now()->getTimestamp()) {
             return $this;
         }
 
@@ -92,7 +94,7 @@ public function checkUpdate()
      */
     public function getDate($rssDate)
     {
-        return gmdate(Varien_Db_Adapter_Pdo_Mysql::TIMESTAMP_FORMAT, strtotime($rssDate));
+        return gmdate(Varien_Db_Adapter_Pdo_Mysql::TIMESTAMP_FORMAT, Carbon::parse($rssDate)->getTimestamp());
     }
 
     /**
@@ -122,7 +124,7 @@ public function getLastUpdate()
      */
     public function setLastUpdate()
     {
-        Mage::app()->saveCache(time(), 'admin_notifications_lastcheck');
+        Mage::app()->saveCache(Carbon::now()->getTimestamp(), 'admin_notifications_lastcheck');
         return $this;
     }
 
diff --git a/app/code/core/Mage/Adminhtml/Block/Customer/Edit/Tab/View.php b/app/code/core/Mage/Adminhtml/Block/Customer/Edit/Tab/View.php
index 7f0bdd824c3..ac96057e666 100644
--- a/app/code/core/Mage/Adminhtml/Block/Customer/Edit/Tab/View.php
+++ b/app/code/core/Mage/Adminhtml/Block/Customer/Edit/Tab/View.php
@@ -7,6 +7,8 @@
  * @package    Mage_Adminhtml
  */
 
+use Carbon\Carbon;
+
 /**
  * Customer account form block
  *
@@ -139,7 +141,7 @@ public function getCurrentStatus()
         $log = $this->getCustomerLog();
         if ($log->getLogoutAt()
             || !$log->getLastVisitAt()
-            || strtotime(Varien_Date::now()) - strtotime($log->getLastVisitAt()) > Mage_Log_Model_Visitor::getOnlineMinutesInterval() * 60
+            || Carbon::parse(Varien_Date::now())->getTimestamp() - Carbon::parse($log->getLastVisitAt())->getTimestamp() > Mage_Log_Model_Visitor::getOnlineMinutesInterval() * 60
         ) {
             return Mage::helper('customer')->__('Offline');
         }
diff --git a/app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php b/app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php
index 7cb2d3db9cc..039a5859c3f 100644
--- a/app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php
+++ b/app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php
@@ -8,6 +8,8 @@
  * @package    Mage_Adminhtml
  */
 
+use Carbon\Carbon;
+
 /**
  * Adminhtml dashboard google chart block
  *
@@ -215,7 +217,7 @@ public function generateChart(): array
                             $formats = Mage::app()->getLocale()->getTranslationList('datetime');
                             $format = $formats['yyMM'] ?? 'MM/yyyy';
                             $format = str_replace(['yyyy', 'yy', 'MM'], ['Y', 'y', 'm'], $format);
-                            $this->_axisLabels[$idx][$_index] = date($format, strtotime($_label));
+                            $this->_axisLabels[$idx][$_index] = Carbon::parse($_label)->format($format);
                             break;
                     }
                 }
diff --git a/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Detail.php b/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Detail.php
index ead1475ede1..a16d7aeea60 100644
--- a/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Detail.php
+++ b/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Detail.php
@@ -7,6 +7,8 @@
  * @package    Mage_Adminhtml
  */
 
+use Carbon\Carbon;
+
 
 /**
  * Adminhtml transaction detail
@@ -97,7 +99,7 @@ protected function _toHtml()
             ($this->_txn->getIsClosed()) ? Mage::helper('sales')->__('Yes') : Mage::helper('sales')->__('No'),
         );
 
-        $createdAt = (strtotime($this->_txn->getCreatedAt()))
+        $createdAt = (Carbon::parse($this->_txn->getCreatedAt())->getTimestamp())
             ? $this->formatDate($this->_txn->getCreatedAt(), Mage_Core_Model_Locale::FORMAT_TYPE_MEDIUM, true)
             : $this->__('N/A');
         $this->setCreatedAtHtml($this->escapeHtml($createdAt));
diff --git a/app/code/core/Mage/Adminhtml/Block/Sitemap/Grid/Renderer/Time.php b/app/code/core/Mage/Adminhtml/Block/Sitemap/Grid/Renderer/Time.php
index 0ebd7a1cc54..3177f4d68d3 100644
--- a/app/code/core/Mage/Adminhtml/Block/Sitemap/Grid/Renderer/Time.php
+++ b/app/code/core/Mage/Adminhtml/Block/Sitemap/Grid/Renderer/Time.php
@@ -7,6 +7,8 @@
  * @package    Mage_Adminhtml
  */
 
+use Carbon\Carbon;
+
 /**
  * Sitemap grid link column renderer
  *
@@ -21,9 +23,6 @@ class Mage_Adminhtml_Block_Sitemap_Grid_Renderer_Time extends Mage_Adminhtml_Blo
      */
     public function render(Varien_Object $row)
     {
-        return date(
-            Varien_Date::DATETIME_PHP_FORMAT,
-            strtotime($row->getSitemapTime()) + Mage::getSingleton('core/date')->getGmtOffset(),
-        );
+        return Carbon::createFromTimestamp(Carbon::parse($row->getSitemapTime())->getTimestamp() + Mage::getSingleton('core/date')->getGmtOffset())->format(Varien_Date::DATETIME_PHP_FORMAT);
     }
 }
diff --git a/app/code/core/Mage/Adminhtml/Block/System/Config/Form/Field/Import.php b/app/code/core/Mage/Adminhtml/Block/System/Config/Form/Field/Import.php
index f2099bed79c..27c825e46a5 100644
--- a/app/code/core/Mage/Adminhtml/Block/System/Config/Form/Field/Import.php
+++ b/app/code/core/Mage/Adminhtml/Block/System/Config/Form/Field/Import.php
@@ -7,6 +7,8 @@
  * @package    Mage_Adminhtml
  */
 
+use Carbon\Carbon;
+
 /**
  * Custom import CSV file field for shipping table rates
  *
@@ -30,7 +32,7 @@ public function getElementHtml()
     {
         $html = '';
 
-        $html .= '<input id="time_condition" type="hidden" name="' . $this->getName() . '" value="' . time() . '" />';
+        $html .= '<input id="time_condition" type="hidden" name="' . $this->getName() . '" value="' . Carbon::now()->getTimestamp() . '" />';
 
         $html .= <<<EndHTML
         <script type="text/javascript">
diff --git a/app/code/core/Mage/Adminhtml/Model/Sales/Order/Create.php b/app/code/core/Mage/Adminhtml/Model/Sales/Order/Create.php
index dab2777d40d..3dea07e321a 100644
--- a/app/code/core/Mage/Adminhtml/Model/Sales/Order/Create.php
+++ b/app/code/core/Mage/Adminhtml/Model/Sales/Order/Create.php
@@ -7,6 +7,8 @@
  * @package    Mage_Adminhtml
  */
 
+use Carbon\Carbon;
+
 /**
  * Order create model
  *
@@ -1705,7 +1707,7 @@ protected function _getNewCustomerEmail($customer)
             $host = $this->getSession()
                 ->getStore()
                 ->getConfig(Mage_Customer_Model_Customer::XML_PATH_DEFAULT_EMAIL_DOMAIN);
-            $account = $customer->getIncrementId() ? $customer->getIncrementId() : time();
+            $account = $customer->getIncrementId() ? $customer->getIncrementId() : Carbon::now()->getTimestamp();
             $email = $account . '@' . $host;
             $account = $this->getData('account');
             $account['email'] = $email;
diff --git a/app/code/core/Mage/Adminhtml/Model/Sales/Order/Random.php b/app/code/core/Mage/Adminhtml/Model/Sales/Order/Random.php
index 1860eb868e2..dd06c6b758b 100644
--- a/app/code/core/Mage/Adminhtml/Model/Sales/Order/Random.php
+++ b/app/code/core/Mage/Adminhtml/Model/Sales/Order/Random.php
@@ -7,6 +7,8 @@
  * @package    Mage_Adminhtml
  */
 
+use Carbon\Carbon;
+
 /**
  * Create random order
  *
@@ -148,7 +150,7 @@ public function render()
     protected function _getRandomDate()
     {
         $timestamp = mktime(random_int(0, 23), random_int(0, 59), 0, random_int(1, 11), random_int(1, 28), random_int(2006, 2007));
-        return date(Varien_Date::DATETIME_PHP_FORMAT, $timestamp);
+        return Carbon::createFromTimestamp($timestamp)->format(Varien_Date::DATETIME_PHP_FORMAT);
     }
 
     public function save()
diff --git a/app/code/core/Mage/Adminhtml/Model/System/Config/Source/Date/Short.php b/app/code/core/Mage/Adminhtml/Model/System/Config/Source/Date/Short.php
index f53c061f2c0..bf996fb949a 100644
--- a/app/code/core/Mage/Adminhtml/Model/System/Config/Source/Date/Short.php
+++ b/app/code/core/Mage/Adminhtml/Model/System/Config/Source/Date/Short.php
@@ -7,6 +7,8 @@
  * @package    Mage_Adminhtml
  */
 
+use Carbon\Carbon;
+
 /**
  * @package    Mage_Adminhtml
  * @deprecated
@@ -17,10 +19,10 @@ public function toOptionArray()
     {
         return [
             ['label' => '', 'value' => ''],
-            ['label' => sprintf('MM/DD/YY (%s)', date('m/d/y')), 'value' => '%m/%d/%y'],
-            ['label' => sprintf('MM/DD/YYYY (%s)', date('m/d/Y')), 'value' => '%m/%d/%Y'],
-            ['label' => sprintf('DD/MM/YY (%s)', date('d/m/y')), 'value' => '%d/%m/%y'],
-            ['label' => sprintf('DD/MM/YYYY (%s)', date('d/m/Y')), 'value' => '%d/%m/%Y'],
+            ['label' => sprintf('MM/DD/YY (%s)', Carbon::now()->format('m/d/y')), 'value' => '%m/%d/%y'],
+            ['label' => sprintf('MM/DD/YYYY (%s)', Carbon::now()->format('m/d/Y')), 'value' => '%m/%d/%Y'],
+            ['label' => sprintf('DD/MM/YY (%s)', Carbon::now()->format('d/m/y')), 'value' => '%d/%m/%y'],
+            ['label' => sprintf('DD/MM/YYYY (%s)', Carbon::now()->format('d/m/Y')), 'value' => '%d/%m/%Y'],
         ];
     }
 }
diff --git a/app/code/core/Mage/Adminhtml/controllers/CustomerController.php b/app/code/core/Mage/Adminhtml/controllers/CustomerController.php
index 0bc84a186b6..243c6a32185 100644
--- a/app/code/core/Mage/Adminhtml/controllers/CustomerController.php
+++ b/app/code/core/Mage/Adminhtml/controllers/CustomerController.php
@@ -7,6 +7,8 @@
  * @package    Mage_Adminhtml
  */
 
+use Carbon\Carbon;
+
 /**
  * Customer admin controller
  *
@@ -334,7 +336,7 @@ public function saveAction()
                 // Force new customer confirmation
                 if ($isNewCustomer) {
                     $customer->setPassword($data['account']['password']);
-                    $customer->setPasswordCreatedAt(time());
+                    $customer->setPasswordCreatedAt(Carbon::now()->getTimestamp());
                     $customer->setForceConfirmed(true);
                     if ($customer->getPassword() === 'auto') {
                         $sendPassToEmail = true;
@@ -886,7 +888,7 @@ public function viewfileAction()
                 ->setHeader('Pragma', 'public', true)
                 ->setHeader('Content-type', $contentType, true)
                 ->setHeader('Content-Length', $contentLength)
-                ->setHeader('Last-Modified', date('r', (int) $contentModify))
+                ->setHeader('Last-Modified', Carbon::createFromTimestamp((int) $contentModify)->format('r'))
                 ->clearBody();
             $this->getResponse()->sendHeaders();
 
diff --git a/app/code/core/Mage/Adminhtml/controllers/Sales/Order/ShipmentController.php b/app/code/core/Mage/Adminhtml/controllers/Sales/Order/ShipmentController.php
index 621b31c4f53..db6339cfba9 100644
--- a/app/code/core/Mage/Adminhtml/controllers/Sales/Order/ShipmentController.php
+++ b/app/code/core/Mage/Adminhtml/controllers/Sales/Order/ShipmentController.php
@@ -7,6 +7,8 @@
  * @package    Mage_Adminhtml
  */
 
+use Carbon\Carbon;
+
 /**
  * Adminhtml sales order shipment controller
  *
@@ -758,7 +760,7 @@ protected function _createPdfPageFromImageString($imageString)
 
         imageinterlace($image, false);
         $tmpFileName = sys_get_temp_dir() . DS . 'shipping_labels_'
-                     . uniqid((string) mt_rand()) . time() . '.png';
+                     . uniqid((string) mt_rand()) . Carbon::now()->getTimestamp() . '.png';
         imagepng($image, $tmpFileName);
         $pdfImage = Zend_Pdf_Image::imageWithPath($tmpFileName);
         $page->drawImage($pdfImage, 0, 0, $xSize, $ySize);
diff --git a/app/code/core/Mage/Adminhtml/controllers/System/Config/System/StorageController.php b/app/code/core/Mage/Adminhtml/controllers/System/Config/System/StorageController.php
index 54c7858b8b6..fbe245c0f81 100644
--- a/app/code/core/Mage/Adminhtml/controllers/System/Config/System/StorageController.php
+++ b/app/code/core/Mage/Adminhtml/controllers/System/Config/System/StorageController.php
@@ -7,6 +7,8 @@
  * @package    Mage_Adminhtml
  */
 
+use Carbon\Carbon;
+
 /**
  * Adminhtml account controller
  *
@@ -56,7 +58,7 @@ public function synchronizeAction()
         $flag = $this->_getSyncFlag();
         if ($flag && $flag->getState() == Mage_Core_Model_File_Storage_Flag::STATE_RUNNING
             && $flag->getLastUpdate()
-            && time() <= (strtotime($flag->getLastUpdate()) + Mage_Core_Model_File_Storage_Flag::FLAG_TTL)
+            && Carbon::now()->getTimestamp() <= (Carbon::parse($flag->getLastUpdate())->getTimestamp() + Mage_Core_Model_File_Storage_Flag::FLAG_TTL)
         ) {
             return;
         }
@@ -103,7 +105,7 @@ public function statusAction()
                     break;
                 case Mage_Core_Model_File_Storage_Flag::STATE_RUNNING:
                     if (!$flag->getLastUpdate()
-                        || time() <= (strtotime($flag->getLastUpdate()) + Mage_Core_Model_File_Storage_Flag::FLAG_TTL)
+                        || Carbon::now()->getTimestamp() <= (Carbon::parse($flag->getLastUpdate())->getTimestamp() + Mage_Core_Model_File_Storage_Flag::FLAG_TTL)
                     ) {
                         $flagData = $flag->getFlagData();
                         if (is_array($flagData)
diff --git a/app/code/core/Mage/Adminhtml/controllers/System/StoreController.php b/app/code/core/Mage/Adminhtml/controllers/System/StoreController.php
index 2ffa7fea7f2..fdb73dbd5a7 100644
--- a/app/code/core/Mage/Adminhtml/controllers/System/StoreController.php
+++ b/app/code/core/Mage/Adminhtml/controllers/System/StoreController.php
@@ -7,6 +7,8 @@
  * @package    Mage_Adminhtml
  */
 
+use Carbon\Carbon;
+
 /**
  * Store controller
  *
@@ -480,7 +482,7 @@ protected function _backupDatabase($failPath, $arguments = [])
         try {
             $backupDb = Mage::getModel('backup/db');
             $backup   = Mage::getModel('backup/backup')
-                ->setTime(time())
+                ->setTime(Carbon::now()->getTimestamp())
                 ->setType('db')
                 ->setPath(Mage::getBaseDir('var') . DS . 'backups');
 
diff --git a/app/code/core/Mage/Api/Model/Session.php b/app/code/core/Mage/Api/Model/Session.php
index dc28f1c459c..420deb0682f 100644
--- a/app/code/core/Mage/Api/Model/Session.php
+++ b/app/code/core/Mage/Api/Model/Session.php
@@ -7,6 +7,8 @@
  * @package    Mage_Api
  */
 
+use Carbon\Carbon;
+
 /**
  * Webservice api session
  *
@@ -29,7 +31,7 @@ class Mage_Api_Model_Session extends Mage_Core_Model_Session_Abstract
      */
     public function start($sessionName = null)
     {
-        $this->_currentSessId = md5(time() . uniqid('', true) . $sessionName);
+        $this->_currentSessId = md5(Carbon::now()->getTimestamp() . uniqid('', true) . $sessionName);
         $this->sessionIds[] = $this->getSessionId();
         return $this;
     }
@@ -217,7 +219,7 @@ public function isSessionExpired($user)
             return true;
         }
 
-        $timeout = strtotime(Varien_Date::now()) - strtotime($user->getLogdate());
+        $timeout = Carbon::parse(Varien_Date::now())->getTimestamp() - Carbon::parse($user->getLogdate())->getTimestamp();
         return $timeout > Mage::getStoreConfig('api/config/session_timeout');
     }
 
diff --git a/app/code/core/Mage/Authorizenet/Model/Directpost/Request.php b/app/code/core/Mage/Authorizenet/Model/Directpost/Request.php
index c2596ff1eff..a8ecb150bf6 100644
--- a/app/code/core/Mage/Authorizenet/Model/Directpost/Request.php
+++ b/app/code/core/Mage/Authorizenet/Model/Directpost/Request.php
@@ -7,6 +7,8 @@
  * @package    Mage_Authorizenet
  */
 
+use Carbon\Carbon;
+
 /**
  * Authorize.net request model for DirectPost model.
  *
@@ -155,7 +157,7 @@ public function setDataFromOrder(Mage_Sales_Model_Order $order, Mage_Authorizene
      */
     public function signRequestData()
     {
-        $fpTimestamp = (string) time();
+        $fpTimestamp = (string) Carbon::now()->getTimestamp();
         $signatureKey = $this->_getSignatureKey();
         if (!empty($signatureKey)) {
             $hash = $this->_generateSha2RequestSign(
diff --git a/app/code/core/Mage/Captcha/Model/Observer.php b/app/code/core/Mage/Captcha/Model/Observer.php
index e23d68a0a24..3408c5e636e 100644
--- a/app/code/core/Mage/Captcha/Model/Observer.php
+++ b/app/code/core/Mage/Captcha/Model/Observer.php
@@ -7,6 +7,8 @@
  * @package    Mage_Captcha
  */
 
+use Carbon\Carbon;
+
 /**
  * Captcha Observer
  *
@@ -238,7 +240,7 @@ public function deleteOldAttempts()
     public function deleteExpiredImages()
     {
         foreach (Mage::app()->getWebsites(true) as $website) {
-            $expire = time() - Mage::helper('captcha')->getConfigNode('timeout', $website->getDefaultStore()) * 60;
+            $expire = Carbon::now()->subMinutes(1)->getTimestamp();
             $imageDirectory = Mage::helper('captcha')->getImgDir($website);
             foreach (new DirectoryIterator($imageDirectory) as $file) {
                 if ($file->isFile() && pathinfo($file->getFilename(), PATHINFO_EXTENSION) == 'png') {
diff --git a/app/code/core/Mage/Captcha/Model/Resource/Log.php b/app/code/core/Mage/Captcha/Model/Resource/Log.php
index 80b7b669333..df0f651d6d1 100644
--- a/app/code/core/Mage/Captcha/Model/Resource/Log.php
+++ b/app/code/core/Mage/Captcha/Model/Resource/Log.php
@@ -7,6 +7,8 @@
  * @package    Mage_Captcha
  */
 
+use Carbon\Carbon;
+
 /**
  * Log Attempts resource
  *
@@ -132,7 +134,7 @@ public function deleteOldAttempts()
     {
         $this->_getWriteAdapter()->delete(
             $this->getMainTable(),
-            ['updated_at < ?' => Mage::getSingleton('core/date')->gmtDate(null, time() - 60 * 30)],
+            ['updated_at < ?' => Mage::getSingleton('core/date')->gmtDate(null, Carbon::now()->subMinutes(30)->getTimestamp())],
         );
     }
 }
diff --git a/app/code/core/Mage/Captcha/Model/Zend.php b/app/code/core/Mage/Captcha/Model/Zend.php
index 02323709dbd..a777cd6de87 100644
--- a/app/code/core/Mage/Captcha/Model/Zend.php
+++ b/app/code/core/Mage/Captcha/Model/Zend.php
@@ -7,6 +7,8 @@
  * @package    Mage_Captcha
  */
 
+use Carbon\Carbon;
+
 /**
  * Implementation of Zend_Captcha
  *
@@ -457,7 +459,7 @@ public function getWord()
             return null;
         }
 
-        return time() < $sessionData['expires'] ? $sessionData['data'] : null;
+        return Carbon::now()->getTimestamp() < $sessionData['expires'] ? $sessionData['data'] : null;
     }
 
     /**
@@ -470,7 +472,7 @@ protected function _setWord($word)
     {
         $this->getSession()->setData(
             $this->_getFormIdKey(self::SESSION_WORD),
-            ['data' => $word, 'expires' => time() + $this->getTimeout()],
+            ['data' => $word, 'expires' => Carbon::now()->getTimestamp() + $this->getTimeout()],
         );
         $this->_word = $word;
         return $this;
diff --git a/app/code/core/Mage/Catalog/Model/Product/Option/Type/Date.php b/app/code/core/Mage/Catalog/Model/Product/Option/Type/Date.php
index 8a967094f5e..1bc03509f06 100644
--- a/app/code/core/Mage/Catalog/Model/Product/Option/Type/Date.php
+++ b/app/code/core/Mage/Catalog/Model/Product/Option/Type/Date.php
@@ -7,6 +7,8 @@
  * @package    Mage_Catalog
  */
 
+use Carbon\Carbon;
+
 /**
  * Catalog product option date type
  *
@@ -106,7 +108,7 @@ public function prepareForCart()
                     $timestamp += mktime(0, 0, 0, $value['month'], $value['day'], $value['year']);
                 }
             } else {
-                $timestamp += mktime(0, 0, 0, date('m'), date('d'), date('Y'));
+                $timestamp += mktime(0, 0, 0, Carbon::now()->format('m'), Carbon::now()->format('d'), Carbon::now()->format('Y'));
             }
 
             if ($this->_timeExists()) {
@@ -155,7 +157,7 @@ public function getFormattedOptionValue($optionValue)
                     ->date($optionValue, Varien_Date::DATETIME_INTERNAL_FORMAT, null, false)->toString($format);
             } elseif ($this->getOption()->getType() == Mage_Catalog_Model_Product_Option::OPTION_TYPE_TIME) {
                 $date = new Zend_Date($optionValue);
-                $result = date($this->is24hTimeFormat() ? 'H:i' : 'h:i a', $date->getTimestamp());
+                $result = Carbon::createFromTimestamp($date->getTimestamp())->format($this->is24hTimeFormat() ? 'H:i' : 'h:i a');
             } else {
                 $result = $optionValue;
             }
@@ -197,7 +199,7 @@ public function getEditableOptionValue($optionValue)
      */
     public function parseOptionValue($optionValue, $productOptionValues)
     {
-        $timestamp = strtotime($optionValue);
+        $timestamp = Carbon::parse($optionValue)->getTimestamp();
         if ($timestamp === false || $timestamp == -1) {
             return null;
         }
@@ -259,7 +261,7 @@ public function getYearStart()
         if (isset($_range[0]) && !empty($_range[0])) {
             return $_range[0];
         } else {
-            return date('Y');
+            return Carbon::now()->format('Y');
         }
     }
 
@@ -274,7 +276,7 @@ public function getYearEnd()
         if (isset($_range[1]) && !empty($_range[1])) {
             return $_range[1];
         } else {
-            return date('Y');
+            return Carbon::now()->format('Y');
         }
     }
 
diff --git a/app/code/core/Mage/CatalogIndex/Model/Indexer.php b/app/code/core/Mage/CatalogIndex/Model/Indexer.php
index 6da444a1fbf..395004a1be8 100644
--- a/app/code/core/Mage/CatalogIndex/Model/Indexer.php
+++ b/app/code/core/Mage/CatalogIndex/Model/Indexer.php
@@ -7,6 +7,8 @@
  * @package    Mage_CatalogIndex
  */
 
+use Carbon\Carbon;
+
 /**
  * CatalogIndex Index operation model
  *
@@ -721,7 +723,7 @@ public function buildEntityFilter($attributes, $values, &$filteredAttributes, $p
                                 if (isset($values[$code]['from']) && isset($values[$code]['to'])) {
                                     if ($values[$code]['from']) {
                                         if (!is_numeric($values[$code]['from'])) {
-                                            $_date = date(Varien_Db_Adapter_Pdo_Mysql::TIMESTAMP_FORMAT, strtotime($values[$code]['from']));
+                                            $_date = Carbon::parse($values[$code]['from'])->format(Varien_Db_Adapter_Pdo_Mysql::TIMESTAMP_FORMAT);
                                             $values[$code]['from'] = $_date;
                                         }
 
@@ -730,7 +732,7 @@ public function buildEntityFilter($attributes, $values, &$filteredAttributes, $p
 
                                     if ($values[$code]['to']) {
                                         if (!is_numeric($values[$code]['to'])) {
-                                            $values[$code]['to'] = date(Varien_Db_Adapter_Pdo_Mysql::TIMESTAMP_FORMAT, strtotime($values[$code]['to']));
+                                            $values[$code]['to'] = Carbon::parse($values[$code]['to'])->format(Varien_Db_Adapter_Pdo_Mysql::TIMESTAMP_FORMAT);
                                         }
 
                                         $filter[$code]->where('value <= ?', $values[$code]['to']);
diff --git a/app/code/core/Mage/CatalogIndex/Model/Resource/Aggregation.php b/app/code/core/Mage/CatalogIndex/Model/Resource/Aggregation.php
index 9b00f8b2f7c..b94da8eb2a6 100644
--- a/app/code/core/Mage/CatalogIndex/Model/Resource/Aggregation.php
+++ b/app/code/core/Mage/CatalogIndex/Model/Resource/Aggregation.php
@@ -7,6 +7,8 @@
  * @package    Mage_CatalogIndex
  */
 
+use Carbon\Carbon;
+
 /**
  * Resource Model CatalogIndex Aggregation
  *
@@ -101,7 +103,7 @@ public function saveCacheData($data, $key, $tags, $storeId)
 
         $this->_getWriteAdapter()->insertOnDuplicate($this->getMainTable(), [
             'store_id'  => $storeId,
-            'created_at' => $this->formatDate(time()),
+            'created_at' => $this->formatDate(Carbon::now()->getTimestamp()),
             'key'       => $key,
             'data'      => $data,
         ], ['created_at', 'data']);
diff --git a/app/code/core/Mage/CatalogRule/Model/Resource/Rule.php b/app/code/core/Mage/CatalogRule/Model/Resource/Rule.php
index d0098e37984..2ace5db40f8 100644
--- a/app/code/core/Mage/CatalogRule/Model/Resource/Rule.php
+++ b/app/code/core/Mage/CatalogRule/Model/Resource/Rule.php
@@ -7,6 +7,8 @@
  * @package    Mage_CatalogRule
  */
 
+use Carbon\Carbon;
+
 /**
  * Catalog rules resource model
  *
@@ -178,11 +180,11 @@ public function insertRuleData(Mage_CatalogRule_Model_Rule $rule, array $website
 
         $customerGroupIds = $rule->getCustomerGroupIds();
 
-        $fromTime = (int) Mage::getModel('core/date')->gmtTimestamp(strtotime((string) $rule->getFromDate()));
-        $toTime = (int) Mage::getModel('core/date')->gmtTimestamp(strtotime((string) $rule->getToDate()));
+        $fromTime = (int) Mage::getModel('core/date')->gmtTimestamp(Carbon::parse((string) $rule->getFromDate())->getTimestamp());
+        $toTime = (int) Mage::getModel('core/date')->gmtTimestamp(Carbon::parse((string) $rule->getToDate())->getTimestamp());
         $toTime = $toTime ? ($toTime + self::SECONDS_IN_DAY - 1) : 0;
 
-        $timestamp = time();
+        $timestamp = Carbon::now()->getTimestamp();
         if ($fromTime > $timestamp
             || ($toTime && $toTime < $timestamp)
         ) {
@@ -691,7 +693,7 @@ public function getRulesFromProduct($date, $websiteId, $customerGroupId, $produc
     {
         $adapter = $this->_getReadAdapter();
         if (is_string($date)) {
-            $date = strtotime($date);
+            $date = Carbon::parse($date)->getTimestamp();
         }
 
         $select = $adapter->select()
diff --git a/app/code/core/Mage/CatalogRule/Model/Rule.php b/app/code/core/Mage/CatalogRule/Model/Rule.php
index 21e35ebb200..65c9fb2cde8 100644
--- a/app/code/core/Mage/CatalogRule/Model/Rule.php
+++ b/app/code/core/Mage/CatalogRule/Model/Rule.php
@@ -7,6 +7,8 @@
  * @package    Mage_CatalogRule
  */
 
+use Carbon\Carbon;
+
 /**
  * Catalog Rule data model
  *
@@ -363,7 +365,7 @@ public function calcProductPriceRule(Mage_Catalog_Model_Product $product, $price
         }
 
         $dateTs     = Mage::app()->getLocale()->date()->getTimestamp();
-        $cacheKey   = date('Y-m-d', $dateTs) . "|$websiteId|$customerGroupId|$productId|$price";
+        $cacheKey   = Carbon::createFromTimestamp($dateTs)->format('Y-m-d') . "|$websiteId|$customerGroupId|$productId|$price";
 
         if (!array_key_exists($cacheKey, self::$_priceRulesData)) {
             $rulesData = $this->_getResource()->getRulesFromProduct($dateTs, $websiteId, $customerGroupId, $productId);
diff --git a/app/code/core/Mage/CatalogRule/Model/Rule/Condition/Product.php b/app/code/core/Mage/CatalogRule/Model/Rule/Condition/Product.php
index 79814ecd14e..c78f30b5ff2 100644
--- a/app/code/core/Mage/CatalogRule/Model/Rule/Condition/Product.php
+++ b/app/code/core/Mage/CatalogRule/Model/Rule/Condition/Product.php
@@ -7,6 +7,8 @@
  * @package    Mage_CatalogRule
  */
 
+use Carbon\Carbon;
+
 /**
  * Catalog Rule Product Condition data model
  *
@@ -100,7 +102,7 @@ protected function _prepareDatetimeValue($value, $object)
                 return null;
             }
 
-            $value = strtotime($value);
+            $value = Carbon::parse($value)->getTimestamp();
         }
 
         return $value;
diff --git a/app/code/core/Mage/Checkout/Model/Api/Resource/Customer.php b/app/code/core/Mage/Checkout/Model/Api/Resource/Customer.php
index 910c6fe527d..e7b455f5ee7 100644
--- a/app/code/core/Mage/Checkout/Model/Api/Resource/Customer.php
+++ b/app/code/core/Mage/Checkout/Model/Api/Resource/Customer.php
@@ -7,6 +7,8 @@
  * @package    Mage_Checkout
  */
 
+use Carbon\Carbon;
+
 /**
  * Checkout api resource for Customer
  *
@@ -132,7 +134,7 @@ protected function _prepareNewCustomerQuote(Mage_Sales_Model_Quote $quote)
 
         Mage::helper('core')->copyFieldset('checkout_onepage_quote', 'to_customer', $quote, $customer);
         $customer->setPassword($customer->decryptPassword($quote->getPasswordHash()));
-        $customer->setPasswordCreatedAt(time());
+        $customer->setPasswordCreatedAt(Carbon::now()->getTimestamp());
         $quote->setCustomer($customer)
             ->setCustomerId(true);
         $quote->setPasswordHash('');
diff --git a/app/code/core/Mage/Checkout/Model/Type/Onepage.php b/app/code/core/Mage/Checkout/Model/Type/Onepage.php
index 56899e24b99..fda7d1c8c7e 100644
--- a/app/code/core/Mage/Checkout/Model/Type/Onepage.php
+++ b/app/code/core/Mage/Checkout/Model/Type/Onepage.php
@@ -7,6 +7,8 @@
  * @package    Mage_Checkout
  */
 
+use Carbon\Carbon;
+
 /**
  * One page checkout processing model
  *
@@ -727,7 +729,7 @@ protected function _prepareNewCustomerQuote()
 
         Mage::helper('core')->copyFieldset('checkout_onepage_quote', 'to_customer', $quote, $customer);
         $customer->setPassword($customer->decryptPassword($quote->getPasswordHash()));
-        $customer->setPasswordCreatedAt(time());
+        $customer->setPasswordCreatedAt(Carbon::now()->getTimestamp());
         $quote->setCustomer($customer)
             ->setCustomerId(true);
         $quote->setPasswordHash('');
diff --git a/app/code/core/Mage/Cms/Model/Wysiwyg/Images/Storage.php b/app/code/core/Mage/Cms/Model/Wysiwyg/Images/Storage.php
index a0e1b12eea8..4decac0e736 100644
--- a/app/code/core/Mage/Cms/Model/Wysiwyg/Images/Storage.php
+++ b/app/code/core/Mage/Cms/Model/Wysiwyg/Images/Storage.php
@@ -7,6 +7,8 @@
  * @package    Mage_Cms
  */
 
+use Carbon\Carbon;
+
 /**
  * Wysiwyg Images model
  *
@@ -348,7 +350,7 @@ public function getThumbnailUrl($filePath, $checkFile = false)
         if (str_starts_with($filePath, $mediaRootDir)) {
             $thumbSuffix = self::THUMBS_DIRECTORY_NAME . DS . substr($filePath, strlen($mediaRootDir));
             if (!$checkFile || is_readable($this->getHelper()->getStorageRoot() . $thumbSuffix)) {
-                $randomIndex = '?rand=' . time();
+                $randomIndex = '?rand=' . Carbon::now()->getTimestamp();
                 $thumbUrl = $this->getHelper()->getBaseUrl() . Mage_Cms_Model_Wysiwyg_Config::IMAGE_DIRECTORY
                     . DS . $thumbSuffix;
                 return str_replace('\\', '/', $thumbUrl) . $randomIndex;
diff --git a/app/code/core/Mage/Core/Block/Html/Date.php b/app/code/core/Mage/Core/Block/Html/Date.php
index e6f896c178e..a92040b8267 100644
--- a/app/code/core/Mage/Core/Block/Html/Date.php
+++ b/app/code/core/Mage/Core/Block/Html/Date.php
@@ -7,6 +7,8 @@
  * @package    Mage_Core
  */
 
+use Carbon\Carbon;
+
 /**
  * HTML select element block
  *
@@ -77,7 +79,7 @@ protected function _toHtml()
     public function getEscapedValue($index = null)
     {
         if ($this->getFormat() && $this->getValue()) {
-            return date($this->getFormat(), strtotime($this->getValue()));
+            return Carbon::parse($this->getValue())->format($this->getFormat());
         }
 
         return htmlspecialchars($this->getValue());
diff --git a/app/code/core/Mage/Core/Controller/Front/Action.php b/app/code/core/Mage/Core/Controller/Front/Action.php
index df758323326..a930d8ff357 100644
--- a/app/code/core/Mage/Core/Controller/Front/Action.php
+++ b/app/code/core/Mage/Core/Controller/Front/Action.php
@@ -7,6 +7,8 @@
  * @package    Mage_Core
  */
 
+use Carbon\Carbon;
+
 /**
  * Base front controller
  *
@@ -125,7 +127,7 @@ protected function _prepareDownloadResponse(
             ->setHeader('Content-type', $contentType, true)
             ->setHeader('Content-Length', is_null($contentLength) ? strlen($content) : $contentLength)
             ->setHeader('Content-Disposition', 'attachment; filename="' . $fileName . '"')
-            ->setHeader('Last-Modified', date('r'));
+            ->setHeader('Last-Modified', Carbon::now()->format('r'));
 
         if (!is_null($content)) {
             if ($isFile) {
diff --git a/app/code/core/Mage/Core/Controller/Varien/Action.php b/app/code/core/Mage/Core/Controller/Varien/Action.php
index d601a853f90..2cf84260c9e 100644
--- a/app/code/core/Mage/Core/Controller/Varien/Action.php
+++ b/app/code/core/Mage/Core/Controller/Varien/Action.php
@@ -7,6 +7,8 @@
  * @package    Mage_Core
  */
 
+use Carbon\Carbon;
+
 /**
  * Custom Zend_Controller_Action class (formally)
  *
@@ -1112,7 +1114,7 @@ protected function _prepareDownloadResponse(
             ->setHeader('Content-type', $contentType, true)
             ->setHeader('Content-Length', is_null($contentLength) ? strlen($content) : $contentLength, true)
             ->setHeader('Content-Disposition', 'attachment; filename="' . $fileName . '"', true)
-            ->setHeader('Last-Modified', date('r'), true);
+            ->setHeader('Last-Modified', Carbon::now()->format('r'), true);
 
         if (!is_null($content)) {
             if ($isFile) {
diff --git a/app/code/core/Mage/Core/Helper/Data.php b/app/code/core/Mage/Core/Helper/Data.php
index be1e632543e..05a4cc84b4d 100644
--- a/app/code/core/Mage/Core/Helper/Data.php
+++ b/app/code/core/Mage/Core/Helper/Data.php
@@ -7,6 +7,8 @@
  * @package    Mage_Core
  */
 
+use Carbon\Carbon;
+
 /**
  * Core data helper
  *
@@ -199,7 +201,7 @@ public function formatTimezoneDate(
         } elseif (is_int($date)) {
             $date = $locale->date($date, null, null, $useTimezone);
         } elseif (!$date instanceof Zend_Date) {
-            if (($time = strtotime($date)) !== false) {
+            if (($time = Carbon::parse($date)->getTimestamp()) !== false) {
                 $date = $locale->date($time, null, null, $useTimezone);
             } else {
                 return '';
@@ -226,11 +228,11 @@ public function formatTime($time = null, $format = Mage_Core_Model_Locale::FORMA
 
         $locale = Mage::app()->getLocale();
         if (is_null($time)) {
-            $date = $locale->date(time());
+            $date = $locale->date(Carbon::now()->getTimestamp());
         } elseif ($time instanceof Zend_Date) {
             $date = $time;
         } else {
-            $date = $locale->date(strtotime($time));
+            $date = $locale->date(Carbon::parse($time)->getTimestamp());
         }
 
         if ($showDate) {
diff --git a/app/code/core/Mage/Core/Model/Cookie.php b/app/code/core/Mage/Core/Model/Cookie.php
index c38b89ee4fd..7ef37137c0a 100644
--- a/app/code/core/Mage/Core/Model/Cookie.php
+++ b/app/code/core/Mage/Core/Model/Cookie.php
@@ -7,6 +7,7 @@
  * @package    Mage_Core
  */
 
+use Carbon\Carbon;
 use Mage_Adminhtml_Model_System_Config_Source_Cookie_Samesite as CookieSameSite;
 
 /**
@@ -235,7 +236,7 @@ public function set($name, $value, $period = null, $path = null, $domain = null,
         if ($period == 0) {
             $expire = 0;
         } else {
-            $expire = time() + $period;
+            $expire = Carbon::now()->getTimestamp() + $period;
         }
 
         if (is_null($path)) {
diff --git a/app/code/core/Mage/Core/Model/Date.php b/app/code/core/Mage/Core/Model/Date.php
index bd7fd9342e2..61a15fffc82 100644
--- a/app/code/core/Mage/Core/Model/Date.php
+++ b/app/code/core/Mage/Core/Model/Date.php
@@ -7,6 +7,8 @@
  * @package    Mage_Core
  */
 
+use Carbon\Carbon;
+
 /**
  * Date conversion model
  *
@@ -58,7 +60,7 @@ public function calculateOffset($timezone = null)
         }
 
         if ($result === true) {
-            $offset = (int) date('Z');
+            $offset = (int) Carbon::now()->format('Z');
         }
 
         if (!is_null($timezone)) {
@@ -87,7 +89,7 @@ public function gmtDate($format = null, $input = null)
             return false;
         }
 
-        return date($format, (int) $date);
+        return Carbon::createFromTimestamp((int) $date)->format($format);
     }
 
     /**
@@ -104,7 +106,7 @@ public function date($format = null, $input = null)
             $format = Varien_Date::DATETIME_PHP_FORMAT;
         }
 
-        return date($format, $this->timestamp($input));
+        return Carbon::createFromTimestamp($this->timestamp($input))->format($format);
     }
 
     /**
@@ -120,7 +122,7 @@ public function gmtTimestamp($input = null)
         } elseif (is_numeric($input)) {
             $result = $input;
         } else {
-            $result = strtotime($input);
+            $result = Carbon::parse($input)->getTimestamp();
         }
 
         if ($result === false) {
@@ -149,7 +151,7 @@ public function timestamp($input = null)
         } elseif (is_numeric($input)) {
             $result = $input;
         } else {
-            $result = strtotime($input);
+            $result = Carbon::parse($input)->getTimestamp();
         }
 
         $date      = Mage::app()->getLocale()->date($result);
diff --git a/app/code/core/Mage/Core/Model/Locale.php b/app/code/core/Mage/Core/Model/Locale.php
index 15935c81a69..940ffae7bd5 100644
--- a/app/code/core/Mage/Core/Model/Locale.php
+++ b/app/code/core/Mage/Core/Model/Locale.php
@@ -7,6 +7,8 @@
  * @package    Mage_Core
  */
 
+use Carbon\Carbon;
+
 /**
  * Locale model
  *
@@ -630,7 +632,7 @@ public function storeTimeStamp($store = null)
         @date_default_timezone_set($timezone);
         $date = date(Varien_Date::DATETIME_PHP_FORMAT);
         @date_default_timezone_set($currentTimezone);
-        return strtotime($date);
+        return Carbon::parse($date)->getTimestamp();
     }
 
     /**
@@ -884,8 +886,8 @@ public function isStoreDateInInterval($store, $dateFrom = null, $dateTo = null)
         }
 
         $storeTimeStamp = $this->storeTimeStamp($store);
-        $fromTimeStamp  = strtotime((string) $dateFrom);
-        $toTimeStamp    = strtotime((string) $dateTo);
+        $fromTimeStamp  = Carbon::parse((string) $dateFrom)->getTimestamp();
+        $toTimeStamp    = Carbon::parse((string) $dateTo)->getTimestamp();
         if ($dateTo) {
             // fix date YYYY-MM-DD 00:00:00 to YYYY-MM-DD 23:59:59
             $toTimeStamp += 86400;
diff --git a/app/code/core/Mage/Core/Model/Session/Abstract/Varien.php b/app/code/core/Mage/Core/Model/Session/Abstract/Varien.php
index 8363b61c4ba..20c79febd2b 100644
--- a/app/code/core/Mage/Core/Model/Session/Abstract/Varien.php
+++ b/app/code/core/Mage/Core/Model/Session/Abstract/Varien.php
@@ -7,6 +7,7 @@
  * @package    Mage_Core
  */
 
+use Carbon\Carbon;
 use Mage_Adminhtml_Model_System_Config_Source_Cookie_Samesite as CookieSamesite;
 
 /**
@@ -507,7 +508,7 @@ public function validate()
 
             // Refresh expire timestamp
             if ($this->useValidateSessionExpire() || $this->useValidateSessionPasswordTimestamp()) {
-                $this->setValidatorSessionRenewTimestamp(time());
+                $this->setValidatorSessionRenewTimestamp(Carbon::now()->getTimestamp());
                 $_SESSION[self::VALIDATOR_KEY][self::VALIDATOR_SESSION_LIFETIME] = $this->getCookie()->getLifetime();
             }
         }
@@ -575,7 +576,7 @@ protected function _validate()
             && isset($sessionData[self::VALIDATOR_SESSION_RENEW_TIMESTAMP])
             && isset($sessionData[self::VALIDATOR_SESSION_LIFETIME])
             && ((int) $sessionData[self::VALIDATOR_SESSION_RENEW_TIMESTAMP] + (int) $sessionData[self::VALIDATOR_SESSION_LIFETIME])
-            < time()
+            < Carbon::now()->getTimestamp()
         ) {
             return false;
         }
diff --git a/app/code/core/Mage/Cron/Model/Observer.php b/app/code/core/Mage/Cron/Model/Observer.php
index 6c8491dcdef..597cd1b8920 100644
--- a/app/code/core/Mage/Cron/Model/Observer.php
+++ b/app/code/core/Mage/Cron/Model/Observer.php
@@ -7,6 +7,8 @@
  * @package    Mage_Cron
  */
 
+use Carbon\Carbon;
+
 /**
  * Crontab observer
  *
@@ -113,7 +115,7 @@ public function generate()
          * check if schedule generation is needed
          */
         $lastRun = Mage::app()->loadCache(self::CACHE_KEY_LAST_SCHEDULE_GENERATE_AT);
-        if ($lastRun > time() - Mage::getStoreConfig(self::XML_PATH_SCHEDULE_GENERATE_EVERY) * 60) {
+        if ($lastRun > Carbon::now()->subMinutes(1)->getTimestamp()) {
             return $this;
         }
 
@@ -142,7 +144,7 @@ public function generate()
         /**
          * save time schedules generation was ran with no expiration
          */
-        Mage::app()->saveCache(time(), self::CACHE_KEY_LAST_SCHEDULE_GENERATE_AT, ['crontab'], null);
+        Mage::app()->saveCache(Carbon::now()->getTimestamp(), self::CACHE_KEY_LAST_SCHEDULE_GENERATE_AT, ['crontab'], null);
 
         return $this;
     }
@@ -173,14 +175,14 @@ protected function _generateJobs($jobs, $exists)
                 continue;
             }
 
-            $now = time();
+            $now = Carbon::now()->getTimestamp();
             $timeAhead = $now + $scheduleAheadFor;
             $schedule->setJobCode($jobCode)
                 ->setCronExpr($cronExpr)
                 ->setStatus(Mage_Cron_Model_Schedule::STATUS_PENDING);
 
             for ($time = $now; $time < $timeAhead; $time += 60) {
-                $ts = date('Y-m-d H:i:00', $time);
+                $ts = Carbon::createFromTimestamp($time)->format('Y-m-d H:i:00');
                 if (!empty($exists[$jobCode . '/' . $ts])) {
                     // already scheduled
                     continue;
@@ -207,7 +209,7 @@ public function cleanup()
     {
         // check if history cleanup is needed
         $lastCleanup = Mage::app()->loadCache(self::CACHE_KEY_LAST_HISTORY_CLEANUP_AT);
-        if ($lastCleanup > time() - Mage::getStoreConfig(self::XML_PATH_HISTORY_CLEANUP_EVERY) * 60) {
+        if ($lastCleanup > Carbon::now()->subMinutes(1)->getTimestamp()) {
             return $this;
         }
 
@@ -225,17 +227,17 @@ public function cleanup()
             Mage_Cron_Model_Schedule::STATUS_ERROR => Mage::getStoreConfig(self::XML_PATH_HISTORY_FAILURE) * 60,
         ];
 
-        $now = time();
+        $now = Carbon::now()->getTimestamp();
         foreach ($history->getIterator() as $record) {
             if (empty($record->getExecutedAt())
-                || (strtotime($record->getExecutedAt()) < $now - $historyLifetimes[$record->getStatus()])
+                || (Carbon::parse($record->getExecutedAt())->getTimestamp() < $now - $historyLifetimes[$record->getStatus()])
             ) {
                 $record->delete();
             }
         }
 
         // save time history cleanup was ran with no expiration
-        Mage::app()->saveCache(time(), self::CACHE_KEY_LAST_HISTORY_CLEANUP_AT, ['crontab'], null);
+        Mage::app()->saveCache(Carbon::now()->getTimestamp(), self::CACHE_KEY_LAST_HISTORY_CLEANUP_AT, ['crontab'], null);
 
         return $this;
     }
@@ -279,8 +281,8 @@ protected function _processJob($schedule, $jobConfig, $isAlways = false)
         $runConfig = $jobConfig->run;
         if (!$isAlways) {
             $scheduleLifetime = Mage::getStoreConfig(self::XML_PATH_SCHEDULE_LIFETIME) * 60;
-            $now = time();
-            $time = strtotime($schedule->getScheduledAt());
+            $now = Carbon::now()->getTimestamp();
+            $time = Carbon::parse($schedule->getScheduledAt())->getTimestamp();
             if ($time > $now) {
                 return;
             }
@@ -360,7 +362,7 @@ protected function _getAlwaysJobSchedule($jobCode)
         /** @var Mage_Cron_Model_Schedule $schedule */
         $schedule = Mage::getModel('cron/schedule')->load($jobCode, 'job_code');
         if ($schedule->getId() === null) {
-            $ts = date('Y-m-d H:i:00');
+            $ts = Carbon::now()->format('Y-m-d H:i:00');
             $schedule->setJobCode($jobCode)
                 ->setCreatedAt($ts)
                 ->setScheduledAt($ts);
diff --git a/app/code/core/Mage/Cron/Model/Schedule.php b/app/code/core/Mage/Cron/Model/Schedule.php
index 698c16c6477..8216ff5f1f9 100644
--- a/app/code/core/Mage/Cron/Model/Schedule.php
+++ b/app/code/core/Mage/Cron/Model/Schedule.php
@@ -7,6 +7,8 @@
  * @package    Mage_Cron
  */
 
+use Carbon\Carbon;
+
 /**
  * Crontab schedule model
  *
@@ -90,7 +92,7 @@ public function trySchedule($time)
         }
 
         if (!is_numeric($time)) {
-            $time = strtotime($time);
+            $time = Carbon::parse($time)->getTimestamp();
         }
 
         if ($time === false) {
@@ -107,7 +109,7 @@ public function trySchedule($time)
 
         if ($match) {
             $this->setCreatedAt(date(Varien_Db_Adapter_Pdo_Mysql::TIMESTAMP_FORMAT));
-            $this->setScheduledAt(date('Y-m-d H:i:00', (int) $time));
+            $this->setScheduledAt(Carbon::createFromTimestamp((int) $time)->format('Y-m-d H:i:00'));
         }
 
         return $match;
diff --git a/app/code/core/Mage/Customer/Model/Resource/Customer.php b/app/code/core/Mage/Customer/Model/Resource/Customer.php
index 56d6aa4c8a9..d14ab5df77d 100644
--- a/app/code/core/Mage/Customer/Model/Resource/Customer.php
+++ b/app/code/core/Mage/Customer/Model/Resource/Customer.php
@@ -7,6 +7,8 @@
  * @package    Mage_Customer
  */
 
+use Carbon\Carbon;
+
 /**
  * Customer entity resource model
  *
@@ -229,7 +231,7 @@ public function loadByEmail(Mage_Customer_Model_Customer $customer, $email)
      */
     public function changePassword(Mage_Customer_Model_Customer $customer, $newPassword)
     {
-        $customer->setPassword($newPassword)->setPasswordCreatedAt(time());
+        $customer->setPassword($newPassword)->setPasswordCreatedAt(Carbon::now()->getTimestamp());
         $this->saveAttribute($customer, 'password_hash');
         $this->saveAttribute($customer, 'password_created_at');
         return $this;
diff --git a/app/code/core/Mage/Customer/controllers/AccountController.php b/app/code/core/Mage/Customer/controllers/AccountController.php
index 96c34fa85aa..ed7c82ea780 100644
--- a/app/code/core/Mage/Customer/controllers/AccountController.php
+++ b/app/code/core/Mage/Customer/controllers/AccountController.php
@@ -7,6 +7,7 @@
  * @package    Mage_Customer
  */
 
+use Carbon\Carbon;
 use Mage_Customer_Helper_Data as Helper;
 
 /**
@@ -295,7 +296,7 @@ public function createPostAction()
 
             if (empty($errors)) {
                 $customer->cleanPasswordsValidationData();
-                $customer->setPasswordCreatedAt(time());
+                $customer->setPasswordCreatedAt(Carbon::now()->getTimestamp());
                 $customer->save();
                 $this->_dispatchRegisterSuccess($customer);
                 $this->_successProcessRegistration($customer);
@@ -885,7 +886,7 @@ public function resetPasswordPostAction()
             $customer->setRpToken(null);
             $customer->setRpTokenCreatedAt(null);
             $customer->cleanPasswordsValidationData();
-            $customer->setPasswordCreatedAt(time());
+            $customer->setPasswordCreatedAt(Carbon::now()->getTimestamp());
             $customer->setRpCustomerId(null);
             $customer->setConfirmation(null); // Set email is confirmed.
             $customer->save();
@@ -1056,7 +1057,7 @@ public function editPostAction()
 
             try {
                 $customer->cleanPasswordsValidationData();
-                $customer->setPasswordCreatedAt(time());
+                $customer->setPasswordCreatedAt(Carbon::now()->getTimestamp());
 
                 // Reset all password reset tokens if all data was sufficient and correct on email change
                 if ($customer->getIsChangeEmail()) {
diff --git a/app/code/core/Mage/Dataflow/Model/Convert/Iterator.php b/app/code/core/Mage/Dataflow/Model/Convert/Iterator.php
index 5392ab8d66a..3e446699ce2 100644
--- a/app/code/core/Mage/Dataflow/Model/Convert/Iterator.php
+++ b/app/code/core/Mage/Dataflow/Model/Convert/Iterator.php
@@ -7,6 +7,8 @@
  * @package    Mage_Dataflow
  */
 
+use Carbon\Carbon;
+
 /**
  * @package    Mage_Dataflow
  */
@@ -56,7 +58,7 @@ protected function _getProgressBarHtml($sessionId, $totalRows)
 <script type="text/javascript">
 function updateProgress(sessionId, idx, time, memory) {
     var total_rows = ' . $totalRows . ';
-    var elapsed_time = time-' . time() . ';
+    var elapsed_time = time-' . Carbon::now()->getTimestamp() . ';
     var total_time = Math.round(elapsed_time*total_rows/idx);
     var eta = total_time-elapsed_time;
     var eta_str = "";
@@ -92,7 +94,7 @@ public function updateProgress($args)
     {
         $memory = !empty($args['memory']) ? $args['memory'] : '';
         echo '<script type="text/javascript">updateProgress("'
-            . $args['row']['session_id'] . '", "' . $args['idx'] . '", "' . time() . '", "' . $memory . '");</script>';
+            . $args['row']['session_id'] . '", "' . $args['idx'] . '", "' . Carbon::now()->getTimestamp() . '", "' . $memory . '");</script>';
         echo '<li>' . $memory . '</li>';
 
         return [];
diff --git a/app/code/core/Mage/Dataflow/Model/Profile.php b/app/code/core/Mage/Dataflow/Model/Profile.php
index 0cb109666f0..df3b0dba1db 100644
--- a/app/code/core/Mage/Dataflow/Model/Profile.php
+++ b/app/code/core/Mage/Dataflow/Model/Profile.php
@@ -7,6 +7,8 @@
  * @package    Mage_Dataflow
  */
 
+use Carbon\Carbon;
+
 /**
  * Convert profile
  *
@@ -238,7 +240,7 @@ protected function _afterSave()
                     }
 
                     if ($uploadFile) {
-                        $newFilename = 'import-' . date('YmdHis') . '-' . ($index + 1) . '_' . $uploadFile;
+                        $newFilename = 'import-' . Carbon::now()->format('YmdHis') . '-' . ($index + 1) . '_' . $uploadFile;
                         rename($path . $uploadFile, $path . $newFilename);
                         $newUploadedFilenames[] = $newFilename;
                     }
diff --git a/app/code/core/Mage/Dataflow/Model/Resource/Profile.php b/app/code/core/Mage/Dataflow/Model/Resource/Profile.php
index 859b0b6fa81..9eb4d3754a3 100644
--- a/app/code/core/Mage/Dataflow/Model/Resource/Profile.php
+++ b/app/code/core/Mage/Dataflow/Model/Resource/Profile.php
@@ -7,6 +7,8 @@
  * @package    Mage_Dataflow
  */
 
+use Carbon\Carbon;
+
 /**
  * Convert profile resource model
  *
@@ -27,10 +29,10 @@ protected function _construct()
     protected function _beforeSave(Mage_Core_Model_Abstract $object)
     {
         if (!$object->getCreatedAt()) {
-            $object->setCreatedAt($this->formatDate(time()));
+            $object->setCreatedAt($this->formatDate(Carbon::now()->getTimestamp()));
         }
 
-        $object->setUpdatedAt($this->formatDate(time()));
+        $object->setUpdatedAt($this->formatDate(Carbon::now()->getTimestamp()));
         return parent::_beforeSave($object);
     }
 
diff --git a/app/code/core/Mage/Dataflow/Model/Resource/Profile/History.php b/app/code/core/Mage/Dataflow/Model/Resource/Profile/History.php
index c67c100331e..622ca9205c9 100644
--- a/app/code/core/Mage/Dataflow/Model/Resource/Profile/History.php
+++ b/app/code/core/Mage/Dataflow/Model/Resource/Profile/History.php
@@ -7,6 +7,8 @@
  * @package    Mage_Dataflow
  */
 
+use Carbon\Carbon;
+
 /**
  * Convert history resource model
  *
@@ -27,7 +29,7 @@ protected function _construct()
     protected function _beforeSave(Mage_Core_Model_Abstract $object)
     {
         if (!$object->getPerformedAt()) {
-            $object->setPerformedAt($this->formatDate(time()));
+            $object->setPerformedAt($this->formatDate(Carbon::now()->getTimestamp()));
         }
 
         parent::_beforeSave($object);
diff --git a/app/code/core/Mage/Eav/Model/Attribute/Data/Date.php b/app/code/core/Mage/Eav/Model/Attribute/Data/Date.php
index b58004c1aa6..3632da2e7af 100644
--- a/app/code/core/Mage/Eav/Model/Attribute/Data/Date.php
+++ b/app/code/core/Mage/Eav/Model/Attribute/Data/Date.php
@@ -7,6 +7,8 @@
  * @package    Mage_Eav
  */
 
+use Carbon\Carbon;
+
 /**
  * EAV Entity Attribute Date Data Model
  *
@@ -58,15 +60,15 @@ public function validateValue($value)
 
         //range validation
         $validateRules = $attribute->getValidateRules();
-        if ((!empty($validateRules['date_range_min']) && (strtotime($value) < $validateRules['date_range_min']))
-            || (!empty($validateRules['date_range_max']) && (strtotime($value) > $validateRules['date_range_max']))
+        if ((!empty($validateRules['date_range_min']) && (Carbon::parse($value)->getTimestamp() < $validateRules['date_range_min']))
+            || (!empty($validateRules['date_range_max']) && (Carbon::parse($value)->getTimestamp() > $validateRules['date_range_max']))
         ) {
             if (!empty($validateRules['date_range_min']) && !empty($validateRules['date_range_max'])) {
-                $errors[] = Mage::helper('customer')->__('Please enter a valid date between %s and %s at %s.', date('d/m/Y', $validateRules['date_range_min']), date('d/m/Y', $validateRules['date_range_max']), $label);
+                $errors[] = Mage::helper('customer')->__('Please enter a valid date between %s and %s at %s.', Carbon::createFromTimestamp($validateRules['date_range_min'])->format('d/m/Y'), Carbon::createFromTimestamp($validateRules['date_range_max'])->format('d/m/Y'), $label);
             } elseif (!empty($validateRules['date_range_min'])) {
-                $errors[] = Mage::helper('customer')->__('Please enter a valid date equal to or greater than %s at %s.', date('d/m/Y', $validateRules['date_range_min']), $label);
+                $errors[] = Mage::helper('customer')->__('Please enter a valid date equal to or greater than %s at %s.', Carbon::createFromTimestamp($validateRules['date_range_min'])->format('d/m/Y'), $label);
             } elseif (!empty($validateRules['date_range_max'])) {
-                $errors[] = Mage::helper('customer')->__('Please enter a valid date less than or equal to %s at %s.', date('d/m/Y', $validateRules['date_range_max']), $label);
+                $errors[] = Mage::helper('customer')->__('Please enter a valid date less than or equal to %s at %s.', Carbon::createFromTimestamp($validateRules['date_range_max'])->format('d/m/Y'), $label);
             }
         }
 
diff --git a/app/code/core/Mage/ImportExport/Model/Export.php b/app/code/core/Mage/ImportExport/Model/Export.php
index aa2a515ffd2..831c3631a4d 100644
--- a/app/code/core/Mage/ImportExport/Model/Export.php
+++ b/app/code/core/Mage/ImportExport/Model/Export.php
@@ -7,6 +7,8 @@
  * @package    Mage_ImportExport
  */
 
+use Carbon\Carbon;
+
 /**
  * Export model
  *
@@ -304,6 +306,6 @@ public function getFileFormat()
      */
     public function getFileName()
     {
-        return $this->getEntity() . '_' . date('Ymd_His') . '.' . $this->_getWriter()->getFileExtension();
+        return $this->getEntity() . '_' . Carbon::now()->format('Ymd_His') . '.' . $this->_getWriter()->getFileExtension();
     }
 }
diff --git a/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php b/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php
index 2020e469c79..acc1c9e9cd0 100644
--- a/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php
+++ b/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php
@@ -7,6 +7,8 @@
  * @package    Mage_ImportExport
  */
 
+use Carbon\Carbon;
+
 /**
  * Import entity abstract model
  *
@@ -561,7 +563,7 @@ public function isAttributeValid($attrCode, array $attrParams, array $rowData, $
                 break;
             case 'datetime':
                 $val   = trim($rowData[$attrCode]);
-                $valid = strtotime($val) !== false
+                $valid = Carbon::parse($val)->getTimestamp() !== false
                     || preg_match('/^\d{2}.\d{2}.\d{2,4}(?:\s+\d{1,2}.\d{1,2}(?:.\d{1,2})?)?$/', $val);
                 break;
             case 'text':
diff --git a/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer.php b/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer.php
index 03b2d05415e..3625ba2a0ba 100644
--- a/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer.php
+++ b/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer.php
@@ -7,6 +7,8 @@
  * @package    Mage_ImportExport
  */
 
+use Carbon\Carbon;
+
 /**
  * Import entity customer model
  *
@@ -401,7 +403,7 @@ protected function _saveCustomers()
                         'store_id'   => empty($rowData[self::COL_STORE])
                                         ? 0 : $this->_storeCodeToId[$rowData[self::COL_STORE]],
                         'created_at' => empty($rowData['created_at'])
-                                        ? $now : gmdate(Varien_Date::DATETIME_PHP_FORMAT, strtotime($rowData['created_at'])),
+                                        ? $now : gmdate(Varien_Date::DATETIME_PHP_FORMAT, Carbon::parse($rowData['created_at'])->getTimestamp()),
                         'updated_at' => $now,
                     ];
 
@@ -434,7 +436,7 @@ protected function _saveCustomers()
                             if ($attrParams['type'] === 'select') {
                                 $value = $attrParams['options'][strtolower($value)];
                             } elseif ($attrParams['type'] === 'datetime') {
-                                $value = gmdate(Varien_Date::DATETIME_PHP_FORMAT, strtotime($value));
+                                $value = gmdate(Varien_Date::DATETIME_PHP_FORMAT, Carbon::parse($value)->getTimestamp());
                             } elseif ($attrParams['type'] === 'multiselect') {
                                 $value = (array) $attrParams['options'][strtolower($value)];
                                 $attribute->getBackend()->beforeSave($resource->setData($attrCode, $value));
diff --git a/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer/Address.php b/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer/Address.php
index 5fb8e9c83f6..434f3ab9ee9 100644
--- a/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer/Address.php
+++ b/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer/Address.php
@@ -7,6 +7,8 @@
  * @package    Mage_ImportExport
  */
 
+use Carbon\Carbon;
+
 /**
  * Import entity customer address
  *
@@ -186,7 +188,7 @@ protected function _importData()
                         if ($attrParams['type'] === 'select') {
                             $value = $attrParams['options'][strtolower($rowData[$attrAlias])];
                         } elseif ($attrParams['type'] === 'datetime') {
-                            $value = gmdate(Varien_Date::DATETIME_PHP_FORMAT, strtotime($rowData[$attrAlias]));
+                            $value = gmdate(Varien_Date::DATETIME_PHP_FORMAT, Carbon::parse($rowData[$attrAlias])->getTimestamp());
                         } elseif ($attrParams['type'] === 'multiselect') {
                             $value = $attrParams['options'][strtolower($rowData[$attrAlias])];
                             $multiSelect[$attrParams['id']][] = $value;
diff --git a/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php b/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php
index e649f4a7811..2919b445530 100644
--- a/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php
+++ b/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php
@@ -7,6 +7,8 @@
  * @package    Mage_ImportExport
  */
 
+use Carbon\Carbon;
+
 /**
  * Import entity product model
  *
@@ -1643,8 +1645,8 @@ protected function _prepareAttributes($rowData, $rowScope, $attributes, $rowSku,
             $attrTable = $attribute->getBackend()->getTable();
             $storeIds = [0];
 
-            if ($attribute->getBackendType() === 'datetime' && strtotime($attrValue)) {
-                $attrValue = gmdate(Varien_Date::DATETIME_PHP_FORMAT, strtotime($attrValue));
+            if ($attribute->getBackendType() === 'datetime' && Carbon::parse($attrValue)->getTimestamp()) {
+                $attrValue = gmdate(Varien_Date::DATETIME_PHP_FORMAT, Carbon::parse($attrValue)->getTimestamp());
             } elseif ($attribute->getAttributeCode() === 'url_key') {
                 if (empty($attrValue)) {
                     $locale = Mage::getStoreConfig(Mage_Core_Model_Locale::XML_PATH_DEFAULT_LOCALE, $product->getStoreId());
diff --git a/app/code/core/Mage/Index/Model/Event.php b/app/code/core/Mage/Index/Model/Event.php
index 6743a6358c2..1e6c30c5a24 100644
--- a/app/code/core/Mage/Index/Model/Event.php
+++ b/app/code/core/Mage/Index/Model/Event.php
@@ -7,6 +7,8 @@
  * @package    Mage_Index
  */
 
+use Carbon\Carbon;
+
 /**
  * @package    Mage_Index
  *
@@ -333,7 +335,7 @@ protected function _beforeSave()
         $newData = $this->getNewData(false);
         $this->setNewData(serialize($newData));
         if (!$this->hasCreatedAt()) {
-            $this->setCreatedAt($this->_getResource()->formatDate(time(), true));
+            $this->setCreatedAt($this->_getResource()->formatDate(Carbon::now()->getTimestamp(), true));
         }
 
         return parent::_beforeSave();
diff --git a/app/code/core/Mage/Index/Model/Lock.php b/app/code/core/Mage/Index/Model/Lock.php
index 0b791c702eb..ecc2b39f9ed 100644
--- a/app/code/core/Mage/Index/Model/Lock.php
+++ b/app/code/core/Mage/Index/Model/Lock.php
@@ -7,6 +7,8 @@
  * @package    Mage_Index
  */
 
+use Carbon\Carbon;
+
 /**
  * Lock model
  *
@@ -298,7 +300,7 @@ protected function _getLockFile($lockName)
                 throw new Exception(sprintf("Unable to open lock file '%s': %s", $file, error_get_last()));
             }
 
-            fwrite(self::$_lockFileResource[$lockName], date('r'));
+            fwrite(self::$_lockFileResource[$lockName], Carbon::now()->format('r'));
         }
 
         return self::$_lockFileResource[$lockName];
diff --git a/app/code/core/Mage/Index/Model/Observer.php b/app/code/core/Mage/Index/Model/Observer.php
index c39fb0ae232..b59dfe44670 100644
--- a/app/code/core/Mage/Index/Model/Observer.php
+++ b/app/code/core/Mage/Index/Model/Observer.php
@@ -7,6 +7,8 @@
  * @package    Mage_Index
  */
 
+use Carbon\Carbon;
+
 /**
  * @package    Mage_Index
  */
@@ -145,7 +147,7 @@ public function cleanOutdatedEvents()
             ->getProcessesCollection()
             ->addFieldToFilter('mode', Mage_Index_Model_Process::MODE_MANUAL);
 
-        $now = new DateTime();
+        $now = Carbon::now();
         /** @noinspection PhpUnhandledExceptionInspection */
         $dateInterval = new DateInterval('PT' . self::OLD_INDEX_EVENT_THRESHOLD_SECONDS . 'S');
         $oldEventsThreshold = $now
diff --git a/app/code/core/Mage/Index/Model/Resource/Process.php b/app/code/core/Mage/Index/Model/Resource/Process.php
index 71ef5ac3da6..1d81cf8e1c3 100644
--- a/app/code/core/Mage/Index/Model/Resource/Process.php
+++ b/app/code/core/Mage/Index/Model/Resource/Process.php
@@ -7,6 +7,8 @@
  * @package    Mage_Index
  */
 
+use Carbon\Carbon;
+
 /**
  * Index Process Resource Model
  *
@@ -47,7 +49,7 @@ public function endProcess(Mage_Index_Model_Process $process)
     {
         $data = [
             'status'    => Mage_Index_Model_Process::STATUS_PENDING,
-            'ended_at'  => $this->formatDate(time()),
+            'ended_at'  => $this->formatDate(Carbon::now()->getTimestamp()),
         ];
         $this->_updateProcessData($process->getId(), $data);
         return $this;
@@ -62,7 +64,7 @@ public function startProcess(Mage_Index_Model_Process $process)
     {
         $data = [
             'status'        => Mage_Index_Model_Process::STATUS_RUNNING,
-            'started_at'    => $this->formatDate(time()),
+            'started_at'    => $this->formatDate(Carbon::now()->getTimestamp()),
         ];
         $this->_updateProcessData($process->getId(), $data);
         return $this;
@@ -77,7 +79,7 @@ public function failProcess(Mage_Index_Model_Process $process)
     {
         $data = [
             'status'   => Mage_Index_Model_Process::STATUS_REQUIRE_REINDEX,
-            'ended_at' => $this->formatDate(time()),
+            'ended_at' => $this->formatDate(Carbon::now()->getTimestamp()),
         ];
         $this->_updateProcessData($process->getId(), $data);
         return $this;
@@ -118,7 +120,7 @@ protected function _updateProcessData($processId, $data)
      */
     public function updateProcessStartDate(Mage_Index_Model_Process $process)
     {
-        $this->_updateProcessData($process->getId(), ['started_at' => $this->formatDate(time())]);
+        $this->_updateProcessData($process->getId(), ['started_at' => $this->formatDate(Carbon::now()->getTimestamp())]);
         return $this;
     }
 
@@ -129,7 +131,7 @@ public function updateProcessStartDate(Mage_Index_Model_Process $process)
      */
     public function updateProcessEndDate(Mage_Index_Model_Process $process)
     {
-        $this->_updateProcessData($process->getId(), ['ended_at' => $this->formatDate(time())]);
+        $this->_updateProcessData($process->getId(), ['ended_at' => $this->formatDate(Carbon::now()->getTimestamp())]);
         return $this;
     }
 
diff --git a/app/code/core/Mage/Install/Model/Installer/Config.php b/app/code/core/Mage/Install/Model/Installer/Config.php
index b901d2e0af4..f39c4aea9e3 100644
--- a/app/code/core/Mage/Install/Model/Installer/Config.php
+++ b/app/code/core/Mage/Install/Model/Installer/Config.php
@@ -7,6 +7,8 @@
  * @package    Mage_Install
  */
 
+use Carbon\Carbon;
+
 /**
  * Config installer
  *
@@ -167,9 +169,9 @@ protected function _checkUrl($url, $secure = false)
 
     public function replaceTmpInstallDate($date = null)
     {
-        $stamp    = strtotime((string) $date);
+        $stamp    = Carbon::parse((string) $date)->getTimestamp();
         $localXml = file_get_contents($this->_localConfigFile);
-        $localXml = str_replace(self::TMP_INSTALL_DATE_VALUE, date('r', $stamp ? $stamp : time()), $localXml);
+        $localXml = str_replace(self::TMP_INSTALL_DATE_VALUE, Carbon::createFromTimestamp($stamp ? $stamp : Carbon::now()->getTimestamp())->format('r'), $localXml);
         file_put_contents($this->_localConfigFile, $localXml);
 
         return $this;
diff --git a/app/code/core/Mage/Log/Model/Aggregation.php b/app/code/core/Mage/Log/Model/Aggregation.php
index 11c8b171775..7b26385c2e4 100644
--- a/app/code/core/Mage/Log/Model/Aggregation.php
+++ b/app/code/core/Mage/Log/Model/Aggregation.php
@@ -7,6 +7,8 @@
  * @package    Mage_Log
  */
 
+use Carbon\Carbon;
+
 /**
  * Log Aggregation Model
  *
@@ -53,7 +55,7 @@ private function _process($store)
     {
         $lastDateRecord = null;
         $start          = $this->_lastRecord;
-        $end            = time();
+        $end            = Carbon::now()->getTimestamp();
         $date           = $start;
 
         while ($date < $end) {
@@ -128,7 +130,7 @@ public function getLastRecordDate()
     {
         $result = $this->_getResource()->getLastRecordDate();
         if (!$result) {
-            $result = $this->_date(strtotime('now - 2 months'));
+            $result = $this->_date(Carbon::parse('now - 2 months')->getTimestamp());
         }
 
         return $result;
@@ -143,7 +145,7 @@ private function _date($in, $offset = null)
     {
         $out = $in;
         if (is_numeric($in)) {
-            $out = date(Varien_Date::DATETIME_PHP_FORMAT, $in);
+            $out = Carbon::createFromTimestamp($in)->format(Varien_Date::DATETIME_PHP_FORMAT);
         }
 
         return $out;
@@ -158,7 +160,7 @@ private function _timestamp($in, $offset = null)
     {
         $out = $in;
         if (!is_numeric($in)) {
-            $out = strtotime($in);
+            $out = Carbon::parse($in)->getTimestamp();
         }
 
         return $out;
@@ -170,6 +172,6 @@ private function _timestamp($in, $offset = null)
      */
     private function _round($in)
     {
-        return date('Y-m-d H:00:00', $this->_timestamp($in));
+        return Carbon::createFromTimestamp($this->_timestamp($in))->format('Y-m-d H:00:00');
     }
 }
diff --git a/app/code/core/Mage/Log/Model/Resource/Visitor/Online.php b/app/code/core/Mage/Log/Model/Resource/Visitor/Online.php
index 5c22531b27d..6bbfabc34c0 100644
--- a/app/code/core/Mage/Log/Model/Resource/Visitor/Online.php
+++ b/app/code/core/Mage/Log/Model/Resource/Visitor/Online.php
@@ -7,6 +7,8 @@
  * @package    Mage_Log
  */
 
+use Carbon\Carbon;
+
 /**
  * Log Prepare Online visitors resource
  *
@@ -26,7 +28,7 @@ protected function _construct()
      */
     public function prepare(Mage_Log_Model_Visitor_Online $object)
     {
-        if (($object->getUpdateFrequency() + $object->getPrepareAt()) > time()) {
+        if (($object->getUpdateFrequency() + $object->getPrepareAt()) > Carbon::now()->getTimestamp()) {
             return $this;
         }
 
diff --git a/app/code/core/Mage/Log/Model/Visitor/Online.php b/app/code/core/Mage/Log/Model/Visitor/Online.php
index ade26adaf58..38bc053a2d6 100644
--- a/app/code/core/Mage/Log/Model/Visitor/Online.php
+++ b/app/code/core/Mage/Log/Model/Visitor/Online.php
@@ -7,6 +7,8 @@
  * @package    Mage_Log
  */
 
+use Carbon\Carbon;
+
 /**
  * Prepare Log Online Visitors Model
  *
@@ -70,7 +72,7 @@ public function getPrepareAt()
     public function setPrepareAt($time = null)
     {
         if (is_null($time)) {
-            $time = time();
+            $time = Carbon::now()->getTimestamp();
         }
 
         Mage::app()->saveCache($time, 'log_visitor_online_prepare_at');
diff --git a/app/code/core/Mage/Oauth/Model/Consumer.php b/app/code/core/Mage/Oauth/Model/Consumer.php
index 4145b573c5b..b4e6d46b76b 100644
--- a/app/code/core/Mage/Oauth/Model/Consumer.php
+++ b/app/code/core/Mage/Oauth/Model/Consumer.php
@@ -7,6 +7,8 @@
  * @package    Mage_Oauth
  */
 
+use Carbon\Carbon;
+
 /**
  * Application model
  *
@@ -56,7 +58,7 @@ protected function _construct()
     protected function _beforeSave()
     {
         if (!$this->getId()) {
-            $this->setUpdatedAt(time());
+            $this->setUpdatedAt(Carbon::now()->getTimestamp());
         }
 
         $this->setCallbackUrl(trim($this->getCallbackUrl()));
diff --git a/app/code/core/Mage/Oauth/Model/Resource/Nonce.php b/app/code/core/Mage/Oauth/Model/Resource/Nonce.php
index 751261847d7..b16c17dd427 100644
--- a/app/code/core/Mage/Oauth/Model/Resource/Nonce.php
+++ b/app/code/core/Mage/Oauth/Model/Resource/Nonce.php
@@ -7,6 +7,8 @@
  * @package    Mage_Oauth
  */
 
+use Carbon\Carbon;
+
 /**
  * oAuth nonce resource model
  *
@@ -32,7 +34,7 @@ public function deleteOldEntries($minutes)
 
             return $adapter->delete(
                 $this->getMainTable(),
-                $adapter->quoteInto('timestamp <= ?', time() - $minutes * 60, Zend_Db::INT_TYPE),
+                $adapter->quoteInto('timestamp <= ?', Carbon::now()->subMinutes(1)->getTimestamp(), Zend_Db::INT_TYPE),
             );
         } else {
             return 0;
diff --git a/app/code/core/Mage/Oauth/Model/Resource/Token.php b/app/code/core/Mage/Oauth/Model/Resource/Token.php
index 5351116b042..30cb7e57389 100644
--- a/app/code/core/Mage/Oauth/Model/Resource/Token.php
+++ b/app/code/core/Mage/Oauth/Model/Resource/Token.php
@@ -7,6 +7,8 @@
  * @package    Mage_Oauth
  */
 
+use Carbon\Carbon;
+
 /**
  * OAuth token resource model
  *
@@ -68,7 +70,7 @@ public function deleteOldEntries($minutes)
                 $this->getMainTable(),
                 $adapter->quoteInto(
                     'type = "' . Mage_Oauth_Model_Token::TYPE_REQUEST . '" AND created_at <= ?',
-                    Varien_Date::formatDate(time() - $minutes * 60),
+                    Varien_Date::formatDate(Carbon::now()->subMinutes(1)->getTimestamp()),
                 ),
             );
         } else {
diff --git a/app/code/core/Mage/Oauth/Model/Server.php b/app/code/core/Mage/Oauth/Model/Server.php
index 5108e669f53..f9e6c93bcd8 100644
--- a/app/code/core/Mage/Oauth/Model/Server.php
+++ b/app/code/core/Mage/Oauth/Model/Server.php
@@ -7,6 +7,8 @@
  * @package    Mage_Oauth
  */
 
+use Carbon\Carbon;
+
 /**
  * oAuth Server
  *
@@ -496,7 +498,7 @@ protected function _validateNonce($nonce, $timestamp)
     {
         $timestamp = (int) $timestamp;
 
-        if ($timestamp <= 0 || $timestamp > (time() + self::TIME_DEVIATION)) {
+        if ($timestamp <= 0 || $timestamp > (Carbon::now()->getTimestamp() + self::TIME_DEVIATION)) {
             $this->_throwException('', self::ERR_TIMESTAMP_REFUSED);
         }
 
diff --git a/app/code/core/Mage/Payment/Block/Form/Cc.php b/app/code/core/Mage/Payment/Block/Form/Cc.php
index 54426c7489c..c94f9b8c5c3 100644
--- a/app/code/core/Mage/Payment/Block/Form/Cc.php
+++ b/app/code/core/Mage/Payment/Block/Form/Cc.php
@@ -7,6 +7,8 @@
  * @package    Mage_Payment
  */
 
+use Carbon\Carbon;
+
 /**
  * @package    Mage_Payment
  */
@@ -131,7 +133,7 @@ public function hasSsCardType()
     public function getSsStartYears()
     {
         $years = [];
-        $first = date('Y');
+        $first = Carbon::now()->format('Y');
 
         for ($index = 5; $index >= 0; $index--) {
             $year = $first - $index;
diff --git a/app/code/core/Mage/Payment/Model/Config.php b/app/code/core/Mage/Payment/Model/Config.php
index 7887413b155..63c828a2ed4 100644
--- a/app/code/core/Mage/Payment/Model/Config.php
+++ b/app/code/core/Mage/Payment/Model/Config.php
@@ -7,6 +7,8 @@
  * @package    Mage_Payment
  */
 
+use Carbon\Carbon;
+
 /**
  * Payment configuration model
  *
@@ -136,7 +138,7 @@ public function getMonths()
     public function getYears()
     {
         $years = [];
-        $first = date('Y');
+        $first = Carbon::now()->format('Y');
 
         for ($index = 0; $index <= 10; $index++) {
             $year = $first + $index;
diff --git a/app/code/core/Mage/Payment/Model/Recurring/Profile.php b/app/code/core/Mage/Payment/Model/Recurring/Profile.php
index 1825f9a3ce6..8ff8fd93e83 100644
--- a/app/code/core/Mage/Payment/Model/Recurring/Profile.php
+++ b/app/code/core/Mage/Payment/Model/Recurring/Profile.php
@@ -7,6 +7,8 @@
  * @package    Mage_Payment
  */
 
+use Carbon\Carbon;
+
 /**
  * Recurring payment profile
  * Extends from Mage_Core_Abstract for a reason: to make descendants have its own resource
@@ -314,8 +316,8 @@ public function setNearestStartDatetime(?Zend_Date $minAllowed = null)
     {
         // TODO: implement proper logic with invoking payment method instance
         $date = $minAllowed;
-        if (!$date || $date->getTimestamp() < time()) {
-            $date = new Zend_Date(time());
+        if (!$date || $date->getTimestamp() < Carbon::now()->getTimestamp()) {
+            $date = new Zend_Date(Carbon::now()->getTimestamp());
         }
 
         $this->setStartDatetime($date->toString(Varien_Date::DATETIME_INTERNAL_FORMAT));
@@ -335,7 +337,7 @@ public function exportStartDatetime($asString = true)
             return;
         }
 
-        $date = $this->_locale->storeDate($this->_store, strtotime($datetime), true);
+        $date = $this->_locale->storeDate($this->_store, Carbon::parse($datetime)->getTimestamp(), true);
         if ($asString) {
             return $date->toString($this->_locale->getDateTimeFormat(Mage_Core_Model_Locale::FORMAT_TYPE_SHORT));
         }
diff --git a/app/code/core/Mage/Paypal/Model/Cert.php b/app/code/core/Mage/Paypal/Model/Cert.php
index d9307d646e8..72c922e0265 100644
--- a/app/code/core/Mage/Paypal/Model/Cert.php
+++ b/app/code/core/Mage/Paypal/Model/Cert.php
@@ -7,6 +7,8 @@
  * @package    Mage_Paypal
  */
 
+use Carbon\Carbon;
+
 /**
  * PayPal specific model for certificate based authentication
  *
@@ -49,7 +51,7 @@ public function getCertPath()
             Mage::throwException(Mage::helper('paypal')->__('PayPal certificate does not exist.'));
         }
 
-        $certFileName = sprintf('cert_%s_%s.pem', $this->getWebsiteId(), strtotime($this->getUpdatedAt()));
+        $certFileName = sprintf('cert_%s_%s.pem', $this->getWebsiteId(), Carbon::parse($this->getUpdatedAt())->getTimestamp());
         $certFile = $this->_getBaseDir() . DS . $certFileName;
 
         if (!file_exists($certFile)) {
diff --git a/app/code/core/Mage/Paypal/Model/Express.php b/app/code/core/Mage/Paypal/Model/Express.php
index 8df54a272ca..c58f9d61966 100644
--- a/app/code/core/Mage/Paypal/Model/Express.php
+++ b/app/code/core/Mage/Paypal/Model/Express.php
@@ -7,6 +7,8 @@
  * @package    Mage_Paypal
  */
 
+use Carbon\Carbon;
+
 /**
  * @package    Mage_Paypal
  */
@@ -659,7 +661,7 @@ public function canCapture()
 
             $dateCompass = new DateTime($orderTransaction->getCreatedAt());
             $dateCompass->modify('+' . $orderValidPeriod . ' days');
-            $currentDate = new DateTime();
+            $currentDate = Carbon::now();
 
             if ($currentDate > $dateCompass || $orderValidPeriod == 0) {
                 return false;
diff --git a/app/code/core/Mage/Paypal/Model/Express/Checkout.php b/app/code/core/Mage/Paypal/Model/Express/Checkout.php
index a4c5877bbec..9c144ad14e9 100644
--- a/app/code/core/Mage/Paypal/Model/Express/Checkout.php
+++ b/app/code/core/Mage/Paypal/Model/Express/Checkout.php
@@ -7,6 +7,8 @@
  * @package    Mage_Paypal
  */
 
+use Carbon\Carbon;
+
 /**
  * Wrapper that performs Paypal Express and Checkout communication
  * Use current Paypal Express method instance
@@ -1025,7 +1027,7 @@ protected function _prepareNewCustomerQuote()
         $customer->setSuffix($quote->getCustomerSuffix());
         $customer->setPassword($customer->decryptPassword($quote->getPasswordHash()));
         $customer->setPasswordHash($customer->hashPassword($customer->getPassword()));
-        $customer->setPasswordCreatedAt(time());
+        $customer->setPasswordCreatedAt(Carbon::now()->getTimestamp());
         $customer->save();
 
         $quote->setCustomer($customer);
diff --git a/app/code/core/Mage/Persistent/Model/Session.php b/app/code/core/Mage/Persistent/Model/Session.php
index 7a0db7da639..1892472e520 100644
--- a/app/code/core/Mage/Persistent/Model/Session.php
+++ b/app/code/core/Mage/Persistent/Model/Session.php
@@ -7,6 +7,8 @@
  * @package    Mage_Persistent
  */
 
+use Carbon\Carbon;
+
 /**
  * Persistent Session Model
  *
@@ -82,7 +84,7 @@ public function getExpiredBefore($store = null)
     {
         return gmdate(
             Varien_Db_Adapter_Pdo_Mysql::TIMESTAMP_FORMAT,
-            time() - Mage::helper('persistent')->getLifeTime($store),
+            Carbon::now()->getTimestamp() - Mage::helper('persistent')->getLifeTime($store),
         );
     }
 
@@ -214,7 +216,7 @@ public function deleteExpired($websiteId = null)
         if ($lifetime) {
             $this->getResource()->deleteExpired(
                 $websiteId,
-                gmdate(Varien_Date::DATETIME_PHP_FORMAT, time() - $lifetime),
+                gmdate(Varien_Date::DATETIME_PHP_FORMAT, Carbon::now()->getTimestamp() - $lifetime),
             );
         }
 
diff --git a/app/code/core/Mage/Reports/Helper/Data.php b/app/code/core/Mage/Reports/Helper/Data.php
index 003fb17e6e5..0f32749fbf4 100644
--- a/app/code/core/Mage/Reports/Helper/Data.php
+++ b/app/code/core/Mage/Reports/Helper/Data.php
@@ -7,6 +7,8 @@
  * @package    Mage_Reports
  */
 
+use Carbon\Carbon;
+
 /**
  * @package    Mage_Reports
  */
@@ -74,11 +76,11 @@ public function getIntervals($from, $to, $period = self::REPORT_PERIOD_TYPE_DAY)
         }
 
         if ($period == self::REPORT_PERIOD_TYPE_MONTH) {
-            $dateStart = new Zend_Date(date('Y-m', $start->getTimestamp()), Varien_Date::DATE_INTERNAL_FORMAT);
+            $dateStart = new Zend_Date(Carbon::createFromTimestamp($start->getTimestamp())->format('Y-m'), Varien_Date::DATE_INTERNAL_FORMAT);
         }
 
         if ($period == self::REPORT_PERIOD_TYPE_YEAR) {
-            $dateStart = new Zend_Date(date('Y', $start->getTimestamp()), Varien_Date::DATE_INTERNAL_FORMAT);
+            $dateStart = new Zend_Date(Carbon::createFromTimestamp($start->getTimestamp())->format('Y'), Varien_Date::DATE_INTERNAL_FORMAT);
         }
 
         if (!$period || !$dateStart) {
diff --git a/app/code/core/Mage/Reports/Model/Resource/Entity/Summary/Collection/Abstract.php b/app/code/core/Mage/Reports/Model/Resource/Entity/Summary/Collection/Abstract.php
index 6bb22e389be..5be6bdab9e0 100644
--- a/app/code/core/Mage/Reports/Model/Resource/Entity/Summary/Collection/Abstract.php
+++ b/app/code/core/Mage/Reports/Model/Resource/Entity/Summary/Collection/Abstract.php
@@ -7,6 +7,8 @@
  * @package    Mage_Reports
  */
 
+use Carbon\Carbon;
+
 /**
  * Reports summary collection
  *
@@ -54,11 +56,11 @@ public function setSelectPeriod($periodType, $customStart = null, $customEnd = n
 
             default:
                 if (is_string($customStart)) {
-                    $customStart = strtotime($customStart);
+                    $customStart = Carbon::parse($customStart)->getTimestamp();
                 }
 
                 if (is_string($customEnd)) {
-                    $customEnd = strtotime($customEnd);
+                    $customEnd = Carbon::parse($customEnd)->getTimestamp();
                 }
 
                 break;
diff --git a/app/code/core/Mage/Reports/Model/Resource/Report/Abstract.php b/app/code/core/Mage/Reports/Model/Resource/Report/Abstract.php
index 5b4de386e2d..3f9f0a1cb03 100644
--- a/app/code/core/Mage/Reports/Model/Resource/Report/Abstract.php
+++ b/app/code/core/Mage/Reports/Model/Resource/Report/Abstract.php
@@ -7,6 +7,8 @@
  * @package    Mage_Reports
  */
 
+use Carbon\Carbon;
+
 /**
  * Abstract report aggregate resource model
  *
@@ -463,7 +465,7 @@ protected function _isValidTransition($transition, $to)
     {
         $result         = true;
         $timeStamp      = $transition['ts'];
-        $transitionYear = date('Y', $timeStamp);
+        $transitionYear = Carbon::createFromTimestamp($timeStamp)->format('Y');
 
         if ($transitionYear > 10000 || $transitionYear < -10000) {
             $result = false;
diff --git a/app/code/core/Mage/Reports/Model/Resource/Report/Collection.php b/app/code/core/Mage/Reports/Model/Resource/Report/Collection.php
index cc57fc45c43..586e6203daa 100644
--- a/app/code/core/Mage/Reports/Model/Resource/Report/Collection.php
+++ b/app/code/core/Mage/Reports/Model/Resource/Report/Collection.php
@@ -7,6 +7,8 @@
  * @package    Mage_Reports
  */
 
+use Carbon\Carbon;
+
 /**
  * Report Reviews collection
  *
@@ -128,7 +130,7 @@ public function getIntervals()
 
                         $time['end'] = ($lastInterval) ? $dateStart->setDay($dateEnd->getDay())
                             ->toString('yyyy-MM-dd 23:59:59')
-                            : $dateStart->toString('yyyy-MM-' . date('t', $dateStart->getTimestamp()) . ' 23:59:59');
+                            : $dateStart->toString('yyyy-MM-' . Carbon::createFromTimestamp($dateStart->getTimestamp())->format('t') . ' 23:59:59');
 
                         $dateStart->addMonth(1);
 
diff --git a/app/code/core/Mage/Reports/Model/Test.php b/app/code/core/Mage/Reports/Model/Test.php
index 15efb623336..a4b85fe1e79 100644
--- a/app/code/core/Mage/Reports/Model/Test.php
+++ b/app/code/core/Mage/Reports/Model/Test.php
@@ -7,6 +7,8 @@
  * @package    Mage_Reports
  */
 
+use Carbon\Carbon;
+
 /**
  * Model  for flex reports
  *
@@ -69,16 +71,16 @@ public function getAllLinearExample()
     {
         $session = Mage::getModel('review/session');
 
-        $startPoint = time() - 24 * 60 * 60;
+        $startPoint = Carbon::now()->subDays(1)->getTimestamp();
 
         $allData = [];
         $countOfStartData = 12;
         for ($i = 1; $i <= $countOfStartData; $i++) {
-            $allData[] = ['time' => date('Y-m-d H:i', $startPoint), 'value' => random_int(1, 100)];
+            $allData[] = ['time' => Carbon::createFromTimestamp($startPoint)->format('Y-m-d H:i'), 'value' => random_int(1, 100)];
             $startPoint += 30 * 60;
         }
 
-        $allData[] = ['time' => date('Y-m-d H:i', $startPoint + (90 * 60))];
+        $allData[] = ['time' => Carbon::createFromTimestamp($startPoint + (90 * 60))->format('Y-m-d H:i')];
 
         $session -> setData('startPoint', $startPoint);
 
@@ -97,11 +99,11 @@ public function getNewLinearData()
         $reset = 12;
 
         $newData  = [
-            ['time' => date('Y-m-d H:i', $startPoint), 'value' => random_int(1, 100)],
+            ['time' => Carbon::createFromTimestamp($startPoint)->format('Y-m-d H:i'), 'value' => random_int(1, 100)],
         ];
 
         $startPoint += 30 * 60;
-        $newData[]  = ['time' => date('Y-m-d H:i', $startPoint + (90 * 60))];
+        $newData[]  = ['time' => Carbon::createFromTimestamp($startPoint + (90 * 60))->format('Y-m-d H:i')];
 
         $session->setData('startPoint', $startPoint);
 
diff --git a/app/code/core/Mage/Rss/Block/Catalog/Salesrule.php b/app/code/core/Mage/Rss/Block/Catalog/Salesrule.php
index 5e877de81bd..2fa618f0ff4 100644
--- a/app/code/core/Mage/Rss/Block/Catalog/Salesrule.php
+++ b/app/code/core/Mage/Rss/Block/Catalog/Salesrule.php
@@ -7,6 +7,8 @@
  * @package    Mage_Rss
  */
 
+use Carbon\Carbon;
+
 /**
  * Review form block
  *
@@ -33,7 +35,7 @@ protected function _toHtml()
         $storeId       = $this->_getStoreId();
         $websiteId     = Mage::app()->getStore($storeId)->getWebsiteId();
         $customerGroup = $this->_getCustomerGroupId();
-        $now           = date('Y-m-d');
+        $now           = Carbon::now()->format('Y-m-d');
         $url           = Mage::getUrl('');
         $newUrl        = Mage::getUrl('rss/catalog/salesrule');
         $lang          = Mage::getStoreConfig('general/locale/code');
diff --git a/app/code/core/Mage/Rss/Block/Order/New.php b/app/code/core/Mage/Rss/Block/Order/New.php
index 5399753c173..c58c17435f6 100644
--- a/app/code/core/Mage/Rss/Block/Order/New.php
+++ b/app/code/core/Mage/Rss/Block/Order/New.php
@@ -7,6 +7,8 @@
  * @package    Mage_Rss
  */
 
+use Carbon\Carbon;
+
 /**
  * Review form block
  *
@@ -41,7 +43,7 @@ protected function _toHtml()
         $order = Mage::getModel('sales/order');
         $period = Mage::helper('rss')->getRssAdminOrderNewPeriod($storeId);
         $passDate = $order->getResource()->formatDate(
-            mktime(0, 0, 0, (int) date('m'), (int) date('d') - $period),
+            mktime(0, 0, 0, (int) Carbon::now()->format('m'), (int) Carbon::now()->format('d') - $period),
         );
 
         $newurl = Mage::helper('adminhtml')->getUrl('adminhtml/sales_order', ['_secure' => true, '_nosecret' => true]);
diff --git a/app/code/core/Mage/Rule/Model/Condition/Product/Abstract.php b/app/code/core/Mage/Rule/Model/Condition/Product/Abstract.php
index 9e65253bc5f..61596880316 100644
--- a/app/code/core/Mage/Rule/Model/Condition/Product/Abstract.php
+++ b/app/code/core/Mage/Rule/Model/Condition/Product/Abstract.php
@@ -7,6 +7,8 @@
  * @package    Mage_Rule
  */
 
+use Carbon\Carbon;
+
 /**
  * Abstract Rule product condition data model
  *
@@ -504,8 +506,8 @@ public function validate(Varien_Object $object)
             $attr = $object->getResource()->getAttribute($attrCode);
 
             if ($attr && $attr->getBackendType() == 'datetime' && !is_int($this->getValue())) {
-                $this->setValue(strtotime($this->getValue()));
-                $value = strtotime($object->getData($attrCode));
+                $this->setValue(Carbon::parse($this->getValue())->getTimestamp());
+                $value = Carbon::parse($object->getData($attrCode))->getTimestamp();
                 return $this->validateAttribute($value);
             }
 
@@ -524,7 +526,7 @@ public function validate(Varien_Object $object)
             foreach ($this->_entityAttributeValues[$object->getId()] as $value) {
                 $attr = $object->getResource()->getAttribute($attrCode);
                 if ($attr && $attr->getBackendType() == 'datetime') {
-                    $value = strtotime($value);
+                    $value = Carbon::parse($value)->getTimestamp();
                 } elseif ($attr && $attr->getFrontendInput() == 'multiselect') {
                     $value = strlen($value) ? explode(',', $value) : [];
                 }
diff --git a/app/code/core/Mage/Rule/Model/Environment.php b/app/code/core/Mage/Rule/Model/Environment.php
index 0b511a6a09c..a07a7d7ad4f 100644
--- a/app/code/core/Mage/Rule/Model/Environment.php
+++ b/app/code/core/Mage/Rule/Model/Environment.php
@@ -7,6 +7,8 @@
  * @package    Mage_Rule
  */
 
+use Carbon\Carbon;
+
 /**
  * Class Mage_Rule_Model_Environment
  *
@@ -24,7 +26,7 @@ class Mage_Rule_Model_Environment extends Varien_Object
      */
     public function collect()
     {
-        $this->setNow(time());
+        $this->setNow(Carbon::now()->getTimestamp());
 
         Mage::dispatchEvent('rule_environment_collect', ['env' => $this]);
 
diff --git a/app/code/core/Mage/Sales/Model/Observer.php b/app/code/core/Mage/Sales/Model/Observer.php
index 60562b978d2..51891f58dad 100644
--- a/app/code/core/Mage/Sales/Model/Observer.php
+++ b/app/code/core/Mage/Sales/Model/Observer.php
@@ -7,6 +7,8 @@
  * @package    Mage_Sales
  */
 
+use Carbon\Carbon;
+
 /**
  * Sales observer
  *
@@ -39,7 +41,7 @@ public function cleanExpiredQuotes()
             /** @var Mage_Sales_Model_Resource_Quote_Collection $quotes */
             $quotes = Mage::getResourceModel('sales/quote_collection');
             $quotes->addFieldToFilter('store_id', $storeId);
-            $quotes->addFieldToFilter('updated_at', ['to' => date('Y-m-d', time() - $lifetime)]);
+            $quotes->addFieldToFilter('updated_at', ['to' => Carbon::createFromTimestamp(Carbon::now()->getTimestamp() - $lifetime)->format('Y-m-d')]);
             if ($day == 0) {
                 $quotes->addFieldToFilter('is_active', 0);
             }
diff --git a/app/code/core/Mage/Shipping/Block/Tracking/Popup.php b/app/code/core/Mage/Shipping/Block/Tracking/Popup.php
index bac50a0afe4..246514520ae 100644
--- a/app/code/core/Mage/Shipping/Block/Tracking/Popup.php
+++ b/app/code/core/Mage/Shipping/Block/Tracking/Popup.php
@@ -7,6 +7,8 @@
  * @package    Mage_Shipping
  */
 
+use Carbon\Carbon;
+
 /**
  * Class Mage_Shipping_Block_Tracking_Popup
  *
@@ -219,7 +221,7 @@ public function formatDeliveryDate($date)
     {
         $locale = Mage::app()->getLocale();
         $format = $locale->getDateFormat(Mage_Core_Model_Locale::FORMAT_TYPE_MEDIUM);
-        return $locale->date(strtotime($date), Zend_Date::TIMESTAMP, null, false)
+        return $locale->date(Carbon::parse($date)->getTimestamp(), Zend_Date::TIMESTAMP, null, false)
             ->toString($format);
     }
 
@@ -239,7 +241,7 @@ public function formatDeliveryTime($time, $date = null)
         $locale = Mage::app()->getLocale();
 
         $format = $locale->getTimeFormat(Mage_Core_Model_Locale::FORMAT_TYPE_SHORT);
-        return $locale->date(strtotime($time), Zend_Date::TIMESTAMP, null, false)
+        return $locale->date(Carbon::parse($time)->getTimestamp(), Zend_Date::TIMESTAMP, null, false)
             ->toString($format);
     }
 
diff --git a/app/code/core/Mage/Tag/Model/Resource/Tag/Relation.php b/app/code/core/Mage/Tag/Model/Resource/Tag/Relation.php
index 7371b005a11..2eb57d887c8 100644
--- a/app/code/core/Mage/Tag/Model/Resource/Tag/Relation.php
+++ b/app/code/core/Mage/Tag/Model/Resource/Tag/Relation.php
@@ -7,6 +7,8 @@
  * @package    Mage_Tag
  */
 
+use Carbon\Carbon;
+
 /**
  * Tag Relation resource model
  *
@@ -168,7 +170,7 @@ public function addRelations($model)
                     'store_id'      => $model->getStoreId(),
                     'product_id'    => $value,
                     'customer_id'   => $model->getCustomerId(),
-                    'created_at'    => $this->formatDate(time()),
+                    'created_at'    => $this->formatDate(Carbon::now()->getTimestamp()),
                 ];
             }
 
diff --git a/app/code/core/Mage/Tag/Model/Tag.php b/app/code/core/Mage/Tag/Model/Tag.php
index 3e533b47cb8..120037131d7 100644
--- a/app/code/core/Mage/Tag/Model/Tag.php
+++ b/app/code/core/Mage/Tag/Model/Tag.php
@@ -7,6 +7,8 @@
  * @package    Mage_Tag
  */
 
+use Carbon\Carbon;
+
 /**
  * Tag model
  *
@@ -360,7 +362,7 @@ public function saveRelation($productId, $customerId, $storeId)
             ->setProductId($productId)
             ->setCustomerId($customerId)
             ->setActive(Mage_Tag_Model_Tag_Relation::STATUS_ACTIVE)
-            ->setCreatedAt($relationModel->getResource()->formatDate(time()));
+            ->setCreatedAt($relationModel->getResource()->formatDate(Carbon::now()->getTimestamp()));
 
         $result = '';
         $relationModelSaveNeed = false;
diff --git a/app/code/core/Mage/Usa/Model/Shipping/Carrier/Dhl/Abstract.php b/app/code/core/Mage/Usa/Model/Shipping/Carrier/Dhl/Abstract.php
index 94d7c256768..c6775f9fc54 100644
--- a/app/code/core/Mage/Usa/Model/Shipping/Carrier/Dhl/Abstract.php
+++ b/app/code/core/Mage/Usa/Model/Shipping/Carrier/Dhl/Abstract.php
@@ -7,6 +7,8 @@
  * @package    Mage_Usa
  */
 
+use Carbon\Carbon;
+
 /**
  * DHL Abstract class
  *
@@ -59,12 +61,12 @@ protected function _determineShippingDay($shippingDays, $date)
         $shippingDays = explode(',', $shippingDays);
 
         $index = 0;
-        $weekday = date('D', strtotime($date));
+        $weekday = Carbon::parse($date)->format('D');
         while (!in_array($weekday, $shippingDays) && $index < 10) {
             $index++;
-            $weekday = date('D', strtotime("$date +$index day"));
+            $weekday = Carbon::parse("$date +$index day")->format('D');
         }
 
-        return date(self::REQUEST_DATE_FORMAT, strtotime("$date +$index day"));
+        return Carbon::parse("$date +$index day")->format(self::REQUEST_DATE_FORMAT);
     }
 }
diff --git a/app/code/core/Mage/Usa/Model/Shipping/Carrier/Dhl/International.php b/app/code/core/Mage/Usa/Model/Shipping/Carrier/Dhl/International.php
index 5fd7155e44c..cb2ae205532 100644
--- a/app/code/core/Mage/Usa/Model/Shipping/Carrier/Dhl/International.php
+++ b/app/code/core/Mage/Usa/Model/Shipping/Carrier/Dhl/International.php
@@ -7,6 +7,8 @@
  * @package    Mage_Usa
  */
 
+use Carbon\Carbon;
+
 /**
  * DHL International (API v1.4)
  *
@@ -785,7 +787,7 @@ protected function _getQuotes()
                 $debugPoint = &$debugData['try-' . $offset];
 
                 $requestXml = $this->_buildQuotesRequestXml();
-                $date = date(self::REQUEST_DATE_FORMAT, strtotime($this->_getShipDate() . " +$offset days"));
+                $date = Carbon::parse($this->_getShipDate() . " +$offset days")->format(self::REQUEST_DATE_FORMAT);
                 $this->_setQuotesRequestXmlDate($requestXml, $date);
 
                 $request = $requestXml->asXML();
diff --git a/app/code/core/Mage/Usa/Model/Shipping/Carrier/Fedex.php b/app/code/core/Mage/Usa/Model/Shipping/Carrier/Fedex.php
index 8ace1b2a4c8..b82956f00d6 100644
--- a/app/code/core/Mage/Usa/Model/Shipping/Carrier/Fedex.php
+++ b/app/code/core/Mage/Usa/Model/Shipping/Carrier/Fedex.php
@@ -7,6 +7,8 @@
  * @package    Mage_Usa
  */
 
+use Carbon\Carbon;
+
 /**
  * Fedex shipping implementation
  *
@@ -313,7 +315,7 @@ protected function _formRateRequest($purpose)
             'Version' => $this->getVersionInfo(),
             'RequestedShipment' => [
                 'DropoffType'   => $r->getDropoffType(),
-                'ShipTimestamp' => date('c'),
+                'ShipTimestamp' => Carbon::now()->format('c'),
                 'PackagingType' => $r->getPackaging(),
                 'TotalInsuredValue' => [
                     'Amount'  => $r->getValue(),
@@ -608,7 +610,7 @@ protected function _getXmlQuotes()
         $requestHeader->addChild('AccountNumber', $r->getAccount());
         $requestHeader->addChild('MeterNumber', '0');
 
-        $xml->addChild('ShipDate', date('Y-m-d'));
+        $xml->addChild('ShipDate', Carbon::now()->format('Y-m-d'));
         $xml->addChild('DropoffType', $r->getDropoffType());
         if ($r->hasService()) {
             $xml->addChild('Service', $r->getService());
@@ -1062,10 +1064,10 @@ protected function _parseTrackingResponse($trackingValue, $response)
                 $resultArray['status'] = (string) $trackInfo->StatusDescription;
                 $resultArray['service'] = (string) $trackInfo->ServiceInfo;
                 $timestamp = $trackInfo->EstimatedDeliveryTimestamp ?? $trackInfo->ActualDeliveryTimestamp;
-                $timestamp = strtotime((string) $timestamp);
+                $timestamp = Carbon::parse((string) $timestamp)->getTimestamp();
                 if ($timestamp) {
-                    $resultArray['deliverydate'] = date('Y-m-d', $timestamp);
-                    $resultArray['deliverytime'] = date('H:i:s', $timestamp);
+                    $resultArray['deliverydate'] = Carbon::createFromTimestamp($timestamp)->format('Y-m-d');
+                    $resultArray['deliverytime'] = Carbon::createFromTimestamp($timestamp)->format('H:i:s');
                 }
 
                 $deliveryLocation = $trackInfo->EstimatedDeliveryAddress ?? $trackInfo->ActualDeliveryAddress;
@@ -1087,7 +1089,7 @@ protected function _parseTrackingResponse($trackingValue, $response)
                 }
 
                 $resultArray['signedby'] = (string) $trackInfo->DeliverySignatureName;
-                $resultArray['shippeddate'] = date('Y-m-d', (int) $trackInfo->ShipTimestamp);
+                $resultArray['shippeddate'] = Carbon::createFromTimestamp((int) $trackInfo->ShipTimestamp)->format('Y-m-d');
                 if (isset($trackInfo->PackageWeight) && isset($trackInfo->Units)) {
                     $weight = (string) $trackInfo->PackageWeight;
                     $unit = (string) $trackInfo->Units;
@@ -1104,10 +1106,10 @@ protected function _parseTrackingResponse($trackingValue, $response)
                     foreach ($events as $event) {
                         $tempArray = [];
                         $tempArray['activity'] = (string) $event->EventDescription;
-                        $timestamp = strtotime((string) $event->Timestamp);
+                        $timestamp = Carbon::parse((string) $event->Timestamp)->getTimestamp();
                         if ($timestamp) {
-                            $tempArray['deliverydate'] = date('Y-m-d', $timestamp);
-                            $tempArray['deliverytime'] = date('H:i:s', $timestamp);
+                            $tempArray['deliverydate'] = Carbon::createFromTimestamp($timestamp)->format('Y-m-d');
+                            $tempArray['deliverytime'] = Carbon::createFromTimestamp($timestamp)->format('H:i:s');
                         }
 
                         if (isset($event->Address)) {
@@ -1374,7 +1376,7 @@ protected function _formShipmentRequest(Varien_Object $request)
         $paymentType = $request->getIsReturn() ? 'RECIPIENT' : 'SENDER';
         $requestClient = [
             'RequestedShipment' => [
-                'ShipTimestamp' => time(),
+                'ShipTimestamp' => Carbon::now()->getTimestamp(),
                 'DropoffType'   => $this->getConfigData('dropoff'),
                 'PackagingType' => $request->getPackagingType(),
                 'ServiceType' => $request->getShippingMethod(),
diff --git a/app/design/adminhtml/default/default/template/catalog/category/checkboxes/tree.phtml b/app/design/adminhtml/default/default/template/catalog/category/checkboxes/tree.phtml
index d40495d72c6..402e62cc7f4 100644
--- a/app/design/adminhtml/default/default/template/catalog/category/checkboxes/tree.phtml
+++ b/app/design/adminhtml/default/default/template/catalog/category/checkboxes/tree.phtml
@@ -12,7 +12,7 @@
  */
 ?>
 
-<?php $_divId = 'tree-div_' . time() ?>
+<?php $_divId = 'tree-div_' . \Carbon\Carbon::now()->getTimestamp() ?>
 <div id="<?php echo $_divId ?>" class="tree"></div>
 
 <script type="text/javascript">
diff --git a/app/design/adminhtml/default/default/template/oauth/authorize/button.phtml b/app/design/adminhtml/default/default/template/oauth/authorize/button.phtml
index 46373995150..d78ff4f8dad 100644
--- a/app/design/adminhtml/default/default/template/oauth/authorize/button.phtml
+++ b/app/design/adminhtml/default/default/template/oauth/authorize/button.phtml
@@ -35,7 +35,7 @@
                 </form>
             <?php endif ?>
         </div>
-        <p class="legal"><?php echo $this->__('Magento is a trademark of Magento Inc. Copyright &copy; %s Magento Inc.', date('Y')) ?></p>
+        <p class="legal"><?php echo $this->__('Magento is a trademark of Magento Inc. Copyright &copy; %s Magento Inc.', \Carbon\Carbon::now()->format('Y')) ?></p>
         <div class="bottom"></div>
     </div>
 </div>
diff --git a/app/design/adminhtml/default/default/template/oauth/authorize/confirm.phtml b/app/design/adminhtml/default/default/template/oauth/authorize/confirm.phtml
index 49f33b806f0..170cee683f3 100644
--- a/app/design/adminhtml/default/default/template/oauth/authorize/confirm.phtml
+++ b/app/design/adminhtml/default/default/template/oauth/authorize/confirm.phtml
@@ -22,7 +22,7 @@
                 <p style="font-size: 14px;"><?php echo $this->__('Verifier code: %s', $this->getVerifier()) ?></p>
             <?php endif ?>
         </div>
-        <p class="legal"><?php echo $this->__('Magento is a trademark of Magento Inc. Copyright &copy; %s Magento Inc.', date('Y')) ?></p>
+        <p class="legal"><?php echo $this->__('Magento is a trademark of Magento Inc. Copyright &copy; %s Magento Inc.', \Carbon\Carbon::now()->format('Y')) ?></p>
         <div class="bottom"></div>
     </div>
 </div>
diff --git a/app/design/adminhtml/default/default/template/oauth/authorize/form/login.phtml b/app/design/adminhtml/default/default/template/oauth/authorize/form/login.phtml
index 7a05848e524..d5a4508133a 100644
--- a/app/design/adminhtml/default/default/template/oauth/authorize/form/login.phtml
+++ b/app/design/adminhtml/default/default/template/oauth/authorize/form/login.phtml
@@ -46,7 +46,7 @@
                 </script>
             <?php endif ?>
         </div>
-        <p class="legal"><?php echo $this->__('Magento is a trademark of Magento Inc. Copyright &copy; %s Magento Inc.', date('Y')) ?></p>
+        <p class="legal"><?php echo $this->__('Magento is a trademark of Magento Inc. Copyright &copy; %s Magento Inc.', \Carbon\Carbon::now()->format('Y')) ?></p>
         <div class="bottom"></div>
     </div>
 </div>
diff --git a/app/design/adminhtml/default/default/template/oauth/authorize/reject.phtml b/app/design/adminhtml/default/default/template/oauth/authorize/reject.phtml
index b8f24dac9b5..8f5e6dc2923 100644
--- a/app/design/adminhtml/default/default/template/oauth/authorize/reject.phtml
+++ b/app/design/adminhtml/default/default/template/oauth/authorize/reject.phtml
@@ -21,7 +21,7 @@
             <h1><?php echo $this->__('Rejection Of Authorization') ?></h1>
             <?php echo $this->getMessagesBlock()->toHtml() ?>
         </div>
-        <p class="legal"><?php echo $this->__('Magento is a trademark of Magento Inc. Copyright &copy; %s Magento Inc.', date('Y')) ?></p>
+        <p class="legal"><?php echo $this->__('Magento is a trademark of Magento Inc. Copyright &copy; %s Magento Inc.', \Carbon\Carbon::now()->format('Y')) ?></p>
         <div class="bottom"></div>
     </div>
 </div>
diff --git a/app/design/adminhtml/default/default/template/widget/form/element/gallery.phtml b/app/design/adminhtml/default/default/template/widget/form/element/gallery.phtml
index b6111b6cfec..0a544dbec33 100644
--- a/app/design/adminhtml/default/default/template/widget/form/element/gallery.phtml
+++ b/app/design/adminhtml/default/default/template/widget/form/element/gallery.phtml
@@ -39,7 +39,7 @@ if (!is_null($this->getValues())): ?>
         <?php foreach ($this->getValues()->getAttributeBackend()->getImageTypes() as $type): ?>
             <td class="gallery" align="center" style="vertical-align:bottom;">
             <a href="<?php echo $image->setType($type)->getSourceUrl() ?>" target="_blank" onclick="imagePreview('<?php echo $this->getElement()->getHtmlId() ?>_image_<?php echo $type ?>_<?php echo $image->getValueId() ?>');return false;">
-            <img id="<?php echo $this->getElement()->getHtmlId() ?>_image_<?php echo $type ?>_<?php echo $image->getValueId() ?>" src="<?php echo $image->setType($type)->getSourceUrl() ?>?<?php echo time() ?>" alt="<?php echo $image->getValue() ?>" height="25" class="small-image-preview v-middle"/></a><br/>
+            <img id="<?php echo $this->getElement()->getHtmlId() ?>_image_<?php echo $type ?>_<?php echo $image->getValueId() ?>" src="<?php echo $image->setType($type)->getSourceUrl() ?>?<?php echo \Carbon\Carbon::now()->getTimestamp() ?>" alt="<?php echo $image->getValue() ?>" height="25" class="small-image-preview v-middle"/></a><br/>
             <input type="file" name="<?php echo $this->getElement()->getName() ?>_<?php echo $type ?>[<?php echo $image->getValueId() ?>]" size="1"></td>
         <?php endforeach ?>
         <td class="gallery" align="center" style="vertical-align:bottom;"><input type="input" name="<?php echo $this->getElement()->getParentName() ?>[position][<?php echo $image->getValueId() ?>]" value="<?php echo $image->getPosition() ?>" id="<?php echo $this->getElement()->getHtmlId() ?>_position_<?php echo $image->getValueId() ?>" size="3"/></td>
diff --git a/app/design/frontend/base/default/template/customer/orders.phtml b/app/design/frontend/base/default/template/customer/orders.phtml
index 193ee19ce13..bf54585d8bb 100644
--- a/app/design/frontend/base/default/template/customer/orders.phtml
+++ b/app/design/frontend/base/default/template/customer/orders.phtml
@@ -33,7 +33,7 @@
     <?php foreach ($orders as $order): ?>
         <tr>
             <td><?php echo $order->getRealOrderId() ?>&nbsp;</td>
-            <td><?php echo date("D, j M, Y", strtotime($order->getCreatedAt())) ?>&nbsp;</td>
+            <td><?php echo \Carbon\Carbon::parse($order->getCreatedAt())->format("D, j M, Y") ?>&nbsp;</td>
             <!--<td class="a-center">{$page.orders[io].customer}</td>-->
             <td><?php echo $order->getGrandTotal() ?>&nbsp;</td>
             <td><?php echo $order->getStatus() ?>&nbsp;</td>
diff --git a/app/design/install/default/default/template/page.phtml b/app/design/install/default/default/template/page.phtml
index baf843ab171..e0a7783267d 100644
--- a/app/design/install/default/default/template/page.phtml
+++ b/app/design/install/default/default/template/page.phtml
@@ -95,7 +95,7 @@
     $('bug_tracking_link').target = "varien_external";
 //]]>
 </script>
-            <?php echo Mage::helper('install')->__('Magento is a trademark of Magento Inc. Copyright &copy; %s Magento Inc.', date('Y')) ?>
+            <?php echo Mage::helper('install')->__('Magento is a trademark of Magento Inc. Copyright &copy; %s Magento Inc.', \Carbon\Carbon::now()->format('Y')) ?>
         </p>
         </div>
     </div>
diff --git a/get.php b/get.php
index 572e2d1788f..4eaa1f503c8 100644
--- a/get.php
+++ b/get.php
@@ -7,6 +7,8 @@
  * @package    Mage
  */
 
+use Carbon\Carbon;
+
 $start = microtime(true);
 /**
  * Error reporting
@@ -56,7 +58,7 @@
     $config = json_decode(file_get_contents($configCacheFile), true);
 
     //checking update time
-    if (filemtime($configCacheFile) + $config['update_time'] > time()) {
+    if (filemtime($configCacheFile) + $config['update_time'] > Carbon::now()->getTimestamp()) {
         $mediaDirectory = trim(str_replace($bp . $ds, '', $config['media_directory']), $ds);
         $allowedResources = array_merge($allowedResources, $config['allowed_resources']);
     }
diff --git a/lib/Mage/Cache/Backend/File.php b/lib/Mage/Cache/Backend/File.php
index b03eb321f93..2937586fe35 100644
--- a/lib/Mage/Cache/Backend/File.php
+++ b/lib/Mage/Cache/Backend/File.php
@@ -35,6 +35,8 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+use Carbon\Carbon;
+
 /**
  * Optimized file cache backend
  *
@@ -131,7 +133,7 @@ public function load($id, $doNotTestCacheValidity = false)
         }
 
         [$metadatas, $data] = $cache;
-        if (!$doNotTestCacheValidity && time() > $metadatas['expire']) {
+        if (!$doNotTestCacheValidity && Carbon::now()->getTimestamp() > $metadatas['expire']) {
             // ?? $this->remove($id);
             return false;
         }
@@ -188,7 +190,7 @@ public function save($data, $id, $tags = [], $specificLifetime = false)
 
         $metadatas = [
             'hash'   => $hash,
-            'mtime'  => time(),
+            'mtime'  => Carbon::now()->getTimestamp(),
             'expire' => $this->_expireTime($this->getLifetime($specificLifetime)),
             'tags'   => implode(',', $tags),
         ];
@@ -346,13 +348,13 @@ public function touch($id, $extraLifetime)
         }
 
         [$metadatas, $data] = $cache;
-        if (time() > $metadatas['expire']) {
+        if (Carbon::now()->getTimestamp() > $metadatas['expire']) {
             return false;
         }
 
         $newMetadatas = [
             'hash'   => $metadatas['hash'],
-            'mtime'  => time(),
+            'mtime'  => Carbon::now()->getTimestamp(),
             'expire' => $metadatas['expire'] + $extraLifetime,
             'tags'   => $metadatas['tags'],
         ];
@@ -516,7 +518,7 @@ protected function _clean($dir, $mode = Zend_Cache::CLEANING_MODE_ALL, $tags = [
                 }
 
                 if ($mode == Zend_Cache::CLEANING_MODE_OLD) {
-                    if (time() > $metadatas['expire']) {
+                    if (Carbon::now()->getTimestamp() > $metadatas['expire']) {
                         $result = $this->_remove($file) && $result;
                         $result = $this->_updateIdsTags([$id], explode(',', $metadatas['tags']), 'diff') && $result;
                     }
diff --git a/lib/Varien/Cache/Backend/Database.php b/lib/Varien/Cache/Backend/Database.php
index d9d55c6fe4d..2d8b48c0ef2 100644
--- a/lib/Varien/Cache/Backend/Database.php
+++ b/lib/Varien/Cache/Backend/Database.php
@@ -30,6 +30,8 @@
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
  */
 
+use Carbon\Carbon;
+
 /**
  * Database cache backend
  */
@@ -130,7 +132,7 @@ public function load($id, $doNotTestCacheValidity = false)
                 ->where('id=:cache_id');
 
             if (!$doNotTestCacheValidity) {
-                $select->where('expire_time=0 OR expire_time>?', time());
+                $select->where('expire_time=0 OR expire_time>?', Carbon::now()->getTimestamp());
             }
 
             return $this->_getAdapter()->fetchOne($select, ['cache_id' => $id]);
@@ -151,7 +153,7 @@ public function test($id)
             $select = $this->_getAdapter()->select()
                 ->from($this->_getDataTable(), 'update_time')
                 ->where('id=:cache_id')
-                ->where('expire_time=0 OR expire_time>?', time());
+                ->where('expire_time=0 OR expire_time>?', Carbon::now()->getTimestamp());
             return $this->_getAdapter()->fetchOne($select, ['cache_id' => $id]);
         } else {
             return false;
@@ -179,7 +181,7 @@ public function save($data, $id, $tags = [], $specificLifetime = false)
             $dataTable  = $this->_getDataTable();
 
             $lifetime = $this->getLifetime($specificLifetime);
-            $time     = time();
+            $time     = Carbon::now()->getTimestamp();
             $expire   = ($lifetime === 0 || $lifetime === null) ? 0 : $time + $lifetime;
 
             $dataCol    = $adapter->quoteIdentifier('data');
@@ -298,7 +300,7 @@ public function clean($mode = Zend_Cache::CLEANING_MODE_ALL, $tags = [])
      */
     protected function _cleanOldCache()
     {
-        $time    = time();
+        $time    = Carbon::now()->getTimestamp();
         $counter = 0;
         $result  = true;
         $adapter = $this->_getAdapter();
@@ -469,7 +471,7 @@ public function touch($id, $extraLifetime)
             return $this->_getAdapter()->update(
                 $this->_getDataTable(),
                 ['expire_time' => new Zend_Db_Expr('expire_time+' . $extraLifetime)],
-                ['id=?' => $id, 'expire_time = 0 OR expire_time>?' => time()],
+                ['id=?' => $id, 'expire_time = 0 OR expire_time>?' => Carbon::now()->getTimestamp()],
             );
         } else {
             return true;
diff --git a/lib/Varien/Date.php b/lib/Varien/Date.php
index e5b65a40dfc..090dce5ebe1 100644
--- a/lib/Varien/Date.php
+++ b/lib/Varien/Date.php
@@ -7,6 +7,8 @@
  * @package    Varien_Date
  */
 
+use Carbon\Carbon;
+
 /**
  * Converter of date formats
  * Internal dates
@@ -115,10 +117,10 @@ public static function toTimestamp($date)
         }
 
         if ($date === true) {
-            return time();
+            return Carbon::now()->getTimestamp();
         }
 
-        return strtotime($date);
+        return Carbon::parse($date)->getTimestamp();
     }
 
     /**
@@ -163,6 +165,6 @@ public static function formatDate($date, $includeTime = true)
         }
 
         $format = $includeTime ? self::DATETIME_PHP_FORMAT : self::DATE_PHP_FORMAT;
-        return date($format, $date);
+        return Carbon::createFromTimestamp($date)->format($format);
     }
 }
diff --git a/lib/Varien/Db/Adapter/Mysqli.php b/lib/Varien/Db/Adapter/Mysqli.php
index 33deb8b8655..2103914e4d8 100644
--- a/lib/Varien/Db/Adapter/Mysqli.php
+++ b/lib/Varien/Db/Adapter/Mysqli.php
@@ -1,5 +1,7 @@
 <?php
 
+use Carbon\Carbon;
+
 /**
  * @copyright  For copyright and license information, read the COPYING.txt file.
  * @link       /COPYING.txt
@@ -110,7 +112,7 @@ public function convertDate($date)
             return $date->toString(self::ISO_DATE_FORMAT);
         }
 
-        return date(Varien_Db_Adapter_Pdo_Mysql::DATE_FORMAT, strtotime($date));
+        return Carbon::parse($date)->format(Varien_Db_Adapter_Pdo_Mysql::DATE_FORMAT);
     }
 
     public function convertDateTime($datetime)
@@ -119,7 +121,7 @@ public function convertDateTime($datetime)
             return $datetime->toString(self::ISO_DATETIME_FORMAT);
         }
 
-        return date(Varien_Db_Adapter_Pdo_Mysql::TIMESTAMP_FORMAT, strtotime($datetime));
+        return Carbon::parse($datetime)->format(Varien_Db_Adapter_Pdo_Mysql::TIMESTAMP_FORMAT);
     }
 
     // phpcs:ignore PSR1.Methods.CamelCapsMethodName.NotCamelCaps
diff --git a/lib/Varien/Event/Observer/Cron.php b/lib/Varien/Event/Observer/Cron.php
index 9623759afc3..1aec878de22 100644
--- a/lib/Varien/Event/Observer/Cron.php
+++ b/lib/Varien/Event/Observer/Cron.php
@@ -7,6 +7,8 @@
  * @package    Varien_Event
  */
 
+use Carbon\Carbon;
+
 /**
  * Event cron observer object
  *
@@ -47,7 +49,7 @@ public function isValidFor(Varien_Event $event)
     public function getNow()
     {
         if (!$this->hasNow()) {
-            $this->setNow(time());
+            $this->setNow(Carbon::now()->getTimestamp());
         }
 
         return $this->getData('now');
diff --git a/lib/Varien/Io/File.php b/lib/Varien/Io/File.php
index a3140338f5f..0da11f18679 100644
--- a/lib/Varien/Io/File.php
+++ b/lib/Varien/Io/File.php
@@ -7,6 +7,8 @@
  * @package    Varien_Io
  */
 
+use Carbon\Carbon;
+
 /**
  * Filesystem client
  *
@@ -846,7 +848,7 @@ public function ls($grep = null)
                 }
 
                 $listItem['text'] = $entry;
-                $listItem['mod_date'] = date(Varien_Date::DATETIME_PHP_FORMAT, filectime($fullpath));
+                $listItem['mod_date'] = Carbon::createFromTimestamp(filectime($fullpath))->format(Varien_Date::DATETIME_PHP_FORMAT);
                 $listItem['permissions'] = $this->_parsePermissions(fileperms($fullpath));
                 $listItem['owner'] = $this->_getFileOwner($fullpath);
 
diff --git a/tests/unit/Traits/DataProvider/Mage/Core/Helper/DataTrait.php b/tests/unit/Traits/DataProvider/Mage/Core/Helper/DataTrait.php
index 47a1b69aff6..89d6d6737f5 100644
--- a/tests/unit/Traits/DataProvider/Mage/Core/Helper/DataTrait.php
+++ b/tests/unit/Traits/DataProvider/Mage/Core/Helper/DataTrait.php
@@ -10,6 +10,7 @@
 
 namespace OpenMage\Tests\Unit\Traits\DataProvider\Mage\Core\Helper;
 
+use Carbon\Carbon;
 use Generator;
 
 trait DataTrait
@@ -18,9 +19,9 @@ public function provideFormatTimezoneDate(): Generator
     {
         /** @phpstan-ignore method.nonObject */
         $date           = date_create()->getTimestamp();
-        $dateShort      = date('n/j/Y', $date);
-        $dateLong       = date('F j, Y', $date);
-        $dateShortTime  = date('n/j/Y g:i A', $date);
+        $dateShort      = Carbon::createFromTimestamp($date)->format('n/j/Y');
+        $dateLong       = Carbon::createFromTimestamp($date)->format('F j, Y');
+        $dateShortTime  = Carbon::createFromTimestamp($date)->format('n/j/Y g:i A');
 
         yield 'null' => [
             $dateShort,

From 9e3f30e4ff03bf299ac3cae45073da2bb52c4af5 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Fri, 5 Dec 2025 02:23:09 +0100
Subject: [PATCH 02/24] phpcsfixer

---
 app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Detail.php | 1 -
 1 file changed, 1 deletion(-)

diff --git a/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Detail.php b/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Detail.php
index a16d7aeea60..d6953c27a12 100644
--- a/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Detail.php
+++ b/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Detail.php
@@ -9,7 +9,6 @@
 
 use Carbon\Carbon;
 
-
 /**
  * Adminhtml transaction detail
  *

From c108d05668d66379f5a2eb574f4f979b54923756 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Fri, 5 Dec 2025 02:39:23 +0100
Subject: [PATCH 03/24] docs

---
 app/code/core/Mage/Log/Model/Aggregation.php | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/app/code/core/Mage/Log/Model/Aggregation.php b/app/code/core/Mage/Log/Model/Aggregation.php
index 7b26385c2e4..1c447fe55df 100644
--- a/app/code/core/Mage/Log/Model/Aggregation.php
+++ b/app/code/core/Mage/Log/Model/Aggregation.php
@@ -36,6 +36,8 @@ protected function _construct()
 
     /**
      * Run action
+     *
+     * @throws Mage_Core_Exception
      */
     public function run()
     {
@@ -50,6 +52,7 @@ public function run()
      *
      * @param  int $store
      * @return mixed
+     * @throws Mage_Core_Exception
      */
     private function _process($store)
     {
@@ -59,8 +62,8 @@ private function _process($store)
         $date           = $start;
 
         while ($date < $end) {
-            $to = $date + 3600;
-            $counts = $this->_getCounts($this->_date($date), $this->_date($to), $store);
+            $toDate = $date + 3600;
+            $counts = $this->_getCounts($this->_date($date), $this->_date($toDate), $store);
             $data = [
                 'store_id' => $store,
                 'visitor_count' => $counts['visitors'],
@@ -69,11 +72,11 @@ private function _process($store)
             ];
 
             if ($counts['visitors'] || $counts['customers']) {
-                $this->_save($data, $this->_date($date), $this->_date($to));
+                $this->_save($data, $this->_date($date), $this->_date($toDate));
             }
 
             $lastDateRecord = $date;
-            $date = $to;
+            $date = $toDate;
         }
 
         return $lastDateRecord;
@@ -85,6 +88,7 @@ private function _process($store)
      * @param  array $data
      * @param  string $from
      * @param  string $to
+     * @throws Mage_Core_Exception
      */
     private function _save($data, $from, $to)
     {
@@ -98,6 +102,7 @@ private function _save($data, $from, $to)
     /**
      * @param string $id
      * @param array $data
+     * @throws Mage_Core_Exception
      */
     private function _update($id, $data)
     {
@@ -106,6 +111,7 @@ private function _update($id, $data)
 
     /**
      * @param array $data
+     * @throws Mage_Core_Exception
      */
     private function _insert($data)
     {
@@ -117,6 +123,7 @@ private function _insert($data)
      * @param string $to
      * @param int $store
      * @return array
+     * @throws Mage_Core_Exception
      */
     private function _getCounts($from, $to, $store)
     {
@@ -124,7 +131,8 @@ private function _getCounts($from, $to, $store)
     }
 
     /**
-     * @return false|string
+     * @return int|string
+     * @throws Mage_Core_Exception
      */
     public function getLastRecordDate()
     {
@@ -154,7 +162,7 @@ private function _date($in, $offset = null)
     /**
      * @param int|string $in
      * @param null $offset deprecated
-     * @return false|int
+     * @return int
      */
     private function _timestamp($in, $offset = null)
     {

From 05fc55059045d7a268a381b28ff8514091db3398 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Fri, 5 Dec 2025 03:30:34 +0100
Subject: [PATCH 04/24] handle invalid format

---
 app/code/core/Mage/Core/Helper/Data.php | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/app/code/core/Mage/Core/Helper/Data.php b/app/code/core/Mage/Core/Helper/Data.php
index 05a4cc84b4d..b1da190579b 100644
--- a/app/code/core/Mage/Core/Helper/Data.php
+++ b/app/code/core/Mage/Core/Helper/Data.php
@@ -8,6 +8,7 @@
  */
 
 use Carbon\Carbon;
+use Carbon\Exceptions\InvalidFormatException;
 
 /**
  * Core data helper
@@ -201,9 +202,10 @@ public function formatTimezoneDate(
         } elseif (is_int($date)) {
             $date = $locale->date($date, null, null, $useTimezone);
         } elseif (!$date instanceof Zend_Date) {
-            if (($time = Carbon::parse($date)->getTimestamp()) !== false) {
-                $date = $locale->date($time, null, null, $useTimezone);
-            } else {
+            try {
+                $time = Carbon::parse($date)->getTimestamp();
+                $date = $locale->date($time, null, null, $useTimezone);                
+            } catch (InvalidFormatException) {
                 return '';
             }
         }

From 5ed0c55a86cbdac9d1dd11ae9a62b53ce6116750 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Fri, 5 Dec 2025 04:00:47 +0100
Subject: [PATCH 05/24] fix-1

---
 .../core/Mage/Catalog/Model/Product/Option/Type/Date.php | 8 +++++++-
 app/code/core/Mage/Core/Helper/Data.php                  | 2 +-
 lib/Varien/Date.php                                      | 9 +++++++--
 3 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/app/code/core/Mage/Catalog/Model/Product/Option/Type/Date.php b/app/code/core/Mage/Catalog/Model/Product/Option/Type/Date.php
index 1bc03509f06..b2bcc16e5fd 100644
--- a/app/code/core/Mage/Catalog/Model/Product/Option/Type/Date.php
+++ b/app/code/core/Mage/Catalog/Model/Product/Option/Type/Date.php
@@ -8,6 +8,7 @@
  */
 
 use Carbon\Carbon;
+use Carbon\Exceptions\InvalidFormatException;
 
 /**
  * Catalog product option date type
@@ -199,7 +200,12 @@ public function getEditableOptionValue($optionValue)
      */
     public function parseOptionValue($optionValue, $productOptionValues)
     {
-        $timestamp = Carbon::parse($optionValue)->getTimestamp();
+        try {
+            $timestamp = Carbon::parse($optionValue)->getTimestamp();
+        } catch (InvalidFormatException) {
+            $timestamp = false;
+        }
+
         if ($timestamp === false || $timestamp == -1) {
             return null;
         }
diff --git a/app/code/core/Mage/Core/Helper/Data.php b/app/code/core/Mage/Core/Helper/Data.php
index b1da190579b..48874a81ec9 100644
--- a/app/code/core/Mage/Core/Helper/Data.php
+++ b/app/code/core/Mage/Core/Helper/Data.php
@@ -204,7 +204,7 @@ public function formatTimezoneDate(
         } elseif (!$date instanceof Zend_Date) {
             try {
                 $time = Carbon::parse($date)->getTimestamp();
-                $date = $locale->date($time, null, null, $useTimezone);                
+                $date = $locale->date($time, null, null, $useTimezone);
             } catch (InvalidFormatException) {
                 return '';
             }
diff --git a/lib/Varien/Date.php b/lib/Varien/Date.php
index 090dce5ebe1..e56f63200d5 100644
--- a/lib/Varien/Date.php
+++ b/lib/Varien/Date.php
@@ -8,6 +8,7 @@
  */
 
 use Carbon\Carbon;
+use Carbon\Exceptions\InvalidFormatException;
 
 /**
  * Converter of date formats
@@ -108,7 +109,7 @@ protected static function _convert($value, $dictionary)
      * Returns current UNIX timestamp if date is true
      *
      * @param string|true|Zend_Date $date
-     * @return int
+     * @return false|int
      */
     public static function toTimestamp($date)
     {
@@ -120,7 +121,11 @@ public static function toTimestamp($date)
             return Carbon::now()->getTimestamp();
         }
 
-        return Carbon::parse($date)->getTimestamp();
+        try {
+            return Carbon::parse($date)->getTimestamp();
+        } catch (InvalidFormatException) {
+            return false;
+        }
     }
 
     /**

From e72c481f03b27ac8c9a42c9b88e07943bd0405b2 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Fri, 5 Dec 2025 04:07:59 +0100
Subject: [PATCH 06/24] fix-2

---
 app/code/core/Mage/Cron/Model/Observer.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/code/core/Mage/Cron/Model/Observer.php b/app/code/core/Mage/Cron/Model/Observer.php
index 597cd1b8920..885104621e3 100644
--- a/app/code/core/Mage/Cron/Model/Observer.php
+++ b/app/code/core/Mage/Cron/Model/Observer.php
@@ -115,7 +115,7 @@ public function generate()
          * check if schedule generation is needed
          */
         $lastRun = Mage::app()->loadCache(self::CACHE_KEY_LAST_SCHEDULE_GENERATE_AT);
-        if ($lastRun > Carbon::now()->subMinutes(1)->getTimestamp()) {
+        if ($lastRun > Carbon::now()->subMinutes(Mage::getStoreConfigAsInt(self::XML_PATH_SCHEDULE_GENERATE_EVERY))->getTimestamp()) {
             return $this;
         }
 

From 7253d32dd27ea09497ae9988d216fdd5f1c2226b Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Fri, 5 Dec 2025 04:11:43 +0100
Subject: [PATCH 07/24] fix-3

---
 app/code/core/Mage/Cron/Model/Observer.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/code/core/Mage/Cron/Model/Observer.php b/app/code/core/Mage/Cron/Model/Observer.php
index 885104621e3..cefdb83d0a6 100644
--- a/app/code/core/Mage/Cron/Model/Observer.php
+++ b/app/code/core/Mage/Cron/Model/Observer.php
@@ -209,7 +209,7 @@ public function cleanup()
     {
         // check if history cleanup is needed
         $lastCleanup = Mage::app()->loadCache(self::CACHE_KEY_LAST_HISTORY_CLEANUP_AT);
-        if ($lastCleanup > Carbon::now()->subMinutes(1)->getTimestamp()) {
+        if ($lastCleanup > Carbon::now()->subMinutes(Mage::getStoreConfigAsInt(self::XML_PATH_HISTORY_CLEANUP_EVERY))->getTimestamp()) {
             return $this;
         }
 

From b769d28b6a9444e93e33f86611e91710c8eadcc0 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Fri, 5 Dec 2025 04:19:00 +0100
Subject: [PATCH 08/24] fix-4

---
 app/code/core/Mage/Captcha/Model/Observer.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/code/core/Mage/Captcha/Model/Observer.php b/app/code/core/Mage/Captcha/Model/Observer.php
index 3408c5e636e..239334ab64c 100644
--- a/app/code/core/Mage/Captcha/Model/Observer.php
+++ b/app/code/core/Mage/Captcha/Model/Observer.php
@@ -240,7 +240,8 @@ public function deleteOldAttempts()
     public function deleteExpiredImages()
     {
         foreach (Mage::app()->getWebsites(true) as $website) {
-            $expire = Carbon::now()->subMinutes(1)->getTimestamp();
+            $timeout = (int) Mage::helper('captcha')->getConfigNode('timeout', $website->getDefaultStore());
+            $expire = Carbon::now()->subMinutes($timeout)->getTimestamp();
             $imageDirectory = Mage::helper('captcha')->getImgDir($website);
             foreach (new DirectoryIterator($imageDirectory) as $file) {
                 if ($file->isFile() && pathinfo($file->getFilename(), PATHINFO_EXTENSION) == 'png') {

From 0129580cc8932b2b2bee5ddc8a1f089f9a241635 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Fri, 5 Dec 2025 04:33:15 +0100
Subject: [PATCH 09/24] fix-5

---
 app/code/core/Mage/Captcha/Model/Observer.php |  8 +++--
 .../Model/Product/Option/Type/Date.php        | 12 ++++++--
 app/code/core/Mage/Cron/Model/Observer.php    | 29 +++++++++++++++----
 3 files changed, 39 insertions(+), 10 deletions(-)

diff --git a/app/code/core/Mage/Captcha/Model/Observer.php b/app/code/core/Mage/Captcha/Model/Observer.php
index 239334ab64c..d271eebb0d3 100644
--- a/app/code/core/Mage/Captcha/Model/Observer.php
+++ b/app/code/core/Mage/Captcha/Model/Observer.php
@@ -143,6 +143,7 @@ public function checkRegisterCheckout($observer)
      *
      * @param Varien_Event_Observer $observer
      * @return $this
+     * @throws Mage_Core_Exception
      */
     public function checkUserLoginBackend($observer)
     {
@@ -236,6 +237,7 @@ public function deleteOldAttempts()
      * Delete Expired Captcha Images
      *
      * @return $this
+     * @throws Mage_Core_Exception
      */
     public function deleteExpiredImages()
     {
@@ -323,13 +325,13 @@ public function checkSendfriendSend($observer)
                 Mage::getSingleton('catalog/session')->addError(Mage::helper('captcha')->__('Incorrect CAPTCHA.'));
                 $controller->setFlag('', Mage_Core_Controller_Varien_Action::FLAG_NO_DISPATCH, true);
                 Mage::getSingleton('catalog/session')->setFormData($request->getPost());
-                $id = (int) $request->getParam('id');
+                $sendId = (int) $request->getParam('id');
                 $catId = $request->getParam('cat_id');
                 if ($catId !== null) {
-                    $id .= '/cat_id/' . (int) $catId;
+                    $sendId .= '/cat_id/' . (int) $catId;
                 }
 
-                $controller->getResponse()->setRedirect(Mage::getUrl('*/*/send/id/' . $id));
+                $controller->getResponse()->setRedirect(Mage::getUrl('*/*/send/id/' . $sendId));
             }
         }
 
diff --git a/app/code/core/Mage/Catalog/Model/Product/Option/Type/Date.php b/app/code/core/Mage/Catalog/Model/Product/Option/Type/Date.php
index b2bcc16e5fd..d373214379d 100644
--- a/app/code/core/Mage/Catalog/Model/Product/Option/Type/Date.php
+++ b/app/code/core/Mage/Catalog/Model/Product/Option/Type/Date.php
@@ -87,6 +87,8 @@ public function validateUserValue($values)
      *
      * @return mixed Prepared option value
      * @throws Mage_Core_Exception
+     * @throws Zend_Date_Exception
+     * @throws Zend_Locale_Exception
      */
     public function prepareForCart()
     {
@@ -143,6 +145,9 @@ public function prepareForCart()
      *
      * @param string $optionValue Prepared for cart option value
      * @return string
+     * @throws Mage_Core_Exception
+     * @throws Zend_Date_Exception
+     * @throws Zend_Locale_Exception
      */
     public function getFormattedOptionValue($optionValue)
     {
@@ -197,6 +202,7 @@ public function getEditableOptionValue($optionValue)
      * @param string $optionValue
      * @param array $productOptionValues Values for product option
      * @return null|string
+     * @throws Zend_Date_Exception
      */
     public function parseOptionValue($optionValue, $productOptionValues)
     {
@@ -259,7 +265,7 @@ public function is24hTimeFormat()
     /**
      * Year range start
      *
-     * @return mixed
+     * @return string
      */
     public function getYearStart()
     {
@@ -274,7 +280,7 @@ public function getYearStart()
     /**
      * Year range end
      *
-     * @return mixed
+     * @return string
      */
     public function getYearEnd()
     {
@@ -307,6 +313,7 @@ protected function _setInternalInRequest($internalValue)
      * Does option have date?
      *
      * @return bool
+     * @throws Mage_Core_Exception
      */
     protected function _dateExists()
     {
@@ -320,6 +327,7 @@ protected function _dateExists()
      * Does option have time?
      *
      * @return bool
+     * @throws Mage_Core_Exception
      */
     protected function _timeExists()
     {
diff --git a/app/code/core/Mage/Cron/Model/Observer.php b/app/code/core/Mage/Cron/Model/Observer.php
index cefdb83d0a6..e68787fd89b 100644
--- a/app/code/core/Mage/Cron/Model/Observer.php
+++ b/app/code/core/Mage/Cron/Model/Observer.php
@@ -42,6 +42,9 @@ class Mage_Cron_Model_Observer
      * Cleanup tasks schedule
      *
      * @param Varien_Event_Observer $observer
+     * @throws Mage_Core_Exception
+     * @throws Zend_Cache_Exception
+     * @throws Throwable
      */
     public function dispatch($observer)
     {
@@ -71,6 +74,8 @@ public function dispatch($observer)
      * Process cron queue for tasks marked as always
      *
      * @param Varien_Event_Observer $observer
+     * @throws Mage_Core_Exception
+     * @throws Throwable
      */
     public function dispatchAlways($observer)
     {
@@ -91,6 +96,8 @@ public function dispatchAlways($observer)
 
     /**
      * @return Mage_Cron_Model_Resource_Schedule_Collection
+     * @throws Mage_Core_Exception
+     * @throws Zend_Cache_Exception
      */
     public function getPendingSchedules()
     {
@@ -108,6 +115,9 @@ public function getPendingSchedules()
      * Generate cron schedule
      *
      * @return $this
+     * @throws Mage_Core_Exception
+     * @throws Zend_Cache_Exception
+     * @throws Throwable
      */
     public function generate()
     {
@@ -155,6 +165,8 @@ public function generate()
      * @param   SimpleXMLElement $jobs
      * @param   array $exists
      * @return  $this
+     * @throws  Mage_Core_Exception
+     * @throws  Throwable
      */
     protected function _generateJobs($jobs, $exists)
     {
@@ -182,8 +194,8 @@ protected function _generateJobs($jobs, $exists)
                 ->setStatus(Mage_Cron_Model_Schedule::STATUS_PENDING);
 
             for ($time = $now; $time < $timeAhead; $time += 60) {
-                $ts = Carbon::createFromTimestamp($time)->format('Y-m-d H:i:00');
-                if (!empty($exists[$jobCode . '/' . $ts])) {
+                $timstamp = Carbon::createFromTimestamp($time)->format('Y-m-d H:i:00');
+                if (!empty($exists[$jobCode . '/' . $timstamp])) {
                     // already scheduled
                     continue;
                 }
@@ -204,6 +216,8 @@ protected function _generateJobs($jobs, $exists)
      * Clean up the history of tasks
      *
      * @return $this
+     * @throws Mage_Core_Exception
+     * @throws Zend_Cache_Exception
      */
     public function cleanup()
     {
@@ -248,6 +262,8 @@ public function cleanup()
      * @param string $jobCode
      * @param SimpleXMLElement $jobConfig
      * @return $this|void
+     * @throws Mage_Core_Exception
+     * @throws Throwable
      */
     protected function _processAlwaysTask($jobCode, $jobConfig)
     {
@@ -275,6 +291,7 @@ protected function _processAlwaysTask($jobCode, $jobConfig)
      * @param SimpleXMLElement $jobConfig
      * @param bool $isAlways
      * @return $this|void
+     * @throws Throwable
      */
     protected function _processJob($schedule, $jobConfig, $isAlways = false)
     {
@@ -356,16 +373,18 @@ protected function _processJob($schedule, $jobConfig, $isAlways = false)
      *
      * @param string $jobCode
      * @return Mage_Cron_Model_Schedule
+     * @throws Mage_Core_Exception
+     * @throws Throwable
      */
     protected function _getAlwaysJobSchedule($jobCode)
     {
         /** @var Mage_Cron_Model_Schedule $schedule */
         $schedule = Mage::getModel('cron/schedule')->load($jobCode, 'job_code');
         if ($schedule->getId() === null) {
-            $ts = Carbon::now()->format('Y-m-d H:i:00');
+            $timestamp = Carbon::now()->format('Y-m-d H:i:00');
             $schedule->setJobCode($jobCode)
-                ->setCreatedAt($ts)
-                ->setScheduledAt($ts);
+                ->setCreatedAt($timestamp)
+                ->setScheduledAt($timestamp);
         }
 
         $schedule->setStatus(Mage_Cron_Model_Schedule::STATUS_RUNNING)->save();

From 9e16949f531aa1f435918b0a711b6db30e2c912b Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Fri, 5 Dec 2025 04:42:14 +0100
Subject: [PATCH 10/24] fix-6

---
 app/code/core/Mage/Cron/Model/Observer.php        |  4 ++--
 .../ImportExport/Model/Import/Entity/Abstract.php | 15 +++++++++++++--
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/app/code/core/Mage/Cron/Model/Observer.php b/app/code/core/Mage/Cron/Model/Observer.php
index e68787fd89b..604efd4818a 100644
--- a/app/code/core/Mage/Cron/Model/Observer.php
+++ b/app/code/core/Mage/Cron/Model/Observer.php
@@ -43,8 +43,8 @@ class Mage_Cron_Model_Observer
      *
      * @param Varien_Event_Observer $observer
      * @throws Mage_Core_Exception
-     * @throws Zend_Cache_Exception
      * @throws Throwable
+     * @throws Zend_Cache_Exception
      */
     public function dispatch($observer)
     {
@@ -116,8 +116,8 @@ public function getPendingSchedules()
      *
      * @return $this
      * @throws Mage_Core_Exception
-     * @throws Zend_Cache_Exception
      * @throws Throwable
+     * @throws Zend_Cache_Exception
      */
     public function generate()
     {
diff --git a/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php b/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php
index acc1c9e9cd0..431a57b6a7c 100644
--- a/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php
+++ b/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php
@@ -8,6 +8,7 @@
  */
 
 use Carbon\Carbon;
+use Carbon\Exceptions\InvalidFormatException;
 
 /**
  * Import entity abstract model
@@ -178,6 +179,9 @@ abstract class Mage_ImportExport_Model_Import_Entity_Abstract
      */
     protected $_uniqueAttributes = [];
 
+    /**
+     * @throws Mage_Core_Exception
+     */
     public function __construct()
     {
         $entityType             = Mage::getSingleton('eav/config')->getEntityType($this->getEntityTypeCode());
@@ -193,6 +197,7 @@ public function __construct()
      * Inner source object getter.
      *
      * @return Mage_ImportExport_Model_Import_Adapter_Abstract
+     * @throws Mage_Core_Exception
      */
     protected function _getSource()
     {
@@ -246,6 +251,7 @@ protected function _prepareRowForDb(array $rowData)
      * Validate data rows and save bunches to DB.
      *
      * @return Mage_ImportExport_Model_Import_Entity_Abstract|void
+     * @throws Mage_Core_Exception
      */
     protected function _saveValidatedBunches()
     {
@@ -563,8 +569,12 @@ public function isAttributeValid($attrCode, array $attrParams, array $rowData, $
                 break;
             case 'datetime':
                 $val   = trim($rowData[$attrCode]);
-                $valid = Carbon::parse($val)->getTimestamp() !== false
-                    || preg_match('/^\d{2}.\d{2}.\d{2,4}(?:\s+\d{1,2}.\d{1,2}(?:.\d{1,2})?)?$/', $val);
+                try {
+                    $valid = Carbon::parse($val)->getTimestamp();
+                } catch (InvalidFormatException) {
+                    $valid = false;
+                }
+                $valid !== false || preg_match('/^\d{2}.\d{2}.\d{2,4}(?:\s+\d{1,2}.\d{1,2}(?:.\d{1,2})?)?$/', $val);
                 break;
             case 'text':
                 $val   = Mage::helper('core/string')->cleanString($rowData[$attrCode]);
@@ -593,6 +603,7 @@ public function isAttributeValid($attrCode, array $attrParams, array $rowData, $
      * Is all of data valid?
      *
      * @return bool
+     * @throws Exception
      */
     public function isDataValid()
     {

From 71216cd2b58b97b6c09410f41fae238a4e5c631b Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Fri, 5 Dec 2025 04:48:59 +0100
Subject: [PATCH 11/24] fix-7

---
 .../core/Mage/ImportExport/Model/Import/Entity/Abstract.php     | 1 +
 app/code/core/Mage/Oauth/Model/Resource/Token.php               | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php b/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php
index 431a57b6a7c..b09840b18f5 100644
--- a/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php
+++ b/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php
@@ -574,6 +574,7 @@ public function isAttributeValid($attrCode, array $attrParams, array $rowData, $
                 } catch (InvalidFormatException) {
                     $valid = false;
                 }
+
                 $valid !== false || preg_match('/^\d{2}.\d{2}.\d{2,4}(?:\s+\d{1,2}.\d{1,2}(?:.\d{1,2})?)?$/', $val);
                 break;
             case 'text':
diff --git a/app/code/core/Mage/Oauth/Model/Resource/Token.php b/app/code/core/Mage/Oauth/Model/Resource/Token.php
index 30cb7e57389..b591b26e2b4 100644
--- a/app/code/core/Mage/Oauth/Model/Resource/Token.php
+++ b/app/code/core/Mage/Oauth/Model/Resource/Token.php
@@ -70,7 +70,7 @@ public function deleteOldEntries($minutes)
                 $this->getMainTable(),
                 $adapter->quoteInto(
                     'type = "' . Mage_Oauth_Model_Token::TYPE_REQUEST . '" AND created_at <= ?',
-                    Varien_Date::formatDate(Carbon::now()->subMinutes(1)->getTimestamp()),
+                    Varien_Date::formatDate(Carbon::now()->subMinutes($minutes)->getTimestamp()),
                 ),
             );
         } else {

From 3c915e5954716cff1fd2e90c105ba62b608f3750 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Fri, 5 Dec 2025 04:50:19 +0100
Subject: [PATCH 12/24] fix-7.1

---
 app/code/core/Mage/Oauth/Model/Resource/Token.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/app/code/core/Mage/Oauth/Model/Resource/Token.php b/app/code/core/Mage/Oauth/Model/Resource/Token.php
index b591b26e2b4..5867fe7cbfd 100644
--- a/app/code/core/Mage/Oauth/Model/Resource/Token.php
+++ b/app/code/core/Mage/Oauth/Model/Resource/Token.php
@@ -29,6 +29,7 @@ protected function _construct()
      *
      * @param Mage_Oauth_Model_Token $exceptToken Token just created to exclude from delete
      * @return int The number of affected rows
+     * @throws Mage_Core_Exception
      */
     public function cleanOldAuthorizedTokensExcept(Mage_Oauth_Model_Token $exceptToken)
     {
@@ -60,6 +61,7 @@ public function cleanOldAuthorizedTokensExcept(Mage_Oauth_Model_Token $exceptTok
      *
      * @param int $minutes
      * @return int
+     * @throws Mage_Core_Exception
      */
     public function deleteOldEntries($minutes)
     {

From 29bf4523393e0e3ec3c981b285d21fdf4fda0c82 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Fri, 5 Dec 2025 04:53:34 +0100
Subject: [PATCH 13/24] fix-8

---
 app/code/core/Mage/Oauth/Model/Resource/Nonce.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/code/core/Mage/Oauth/Model/Resource/Nonce.php b/app/code/core/Mage/Oauth/Model/Resource/Nonce.php
index b16c17dd427..9cf548918e8 100644
--- a/app/code/core/Mage/Oauth/Model/Resource/Nonce.php
+++ b/app/code/core/Mage/Oauth/Model/Resource/Nonce.php
@@ -26,6 +26,7 @@ protected function _construct()
      *
      * @param int $minutes Delete entries older than
      * @return int
+     * @throws Mage_Core_Exception
      */
     public function deleteOldEntries($minutes)
     {
@@ -34,7 +35,7 @@ public function deleteOldEntries($minutes)
 
             return $adapter->delete(
                 $this->getMainTable(),
-                $adapter->quoteInto('timestamp <= ?', Carbon::now()->subMinutes(1)->getTimestamp(), Zend_Db::INT_TYPE),
+                $adapter->quoteInto('timestamp <= ?', Carbon::now()->subMinutes($minutes)->getTimestamp(), Zend_Db::INT_TYPE),
             );
         } else {
             return 0;

From eece79e5a3f6730db8298b80b68cb906fe1fe019 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Fri, 5 Dec 2025 05:23:24 +0100
Subject: [PATCH 14/24] fix-9

---
 .../Model/Import/Entity/Product.php           | 48 ++++++++++++++++---
 1 file changed, 42 insertions(+), 6 deletions(-)

diff --git a/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php b/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php
index 2919b445530..2fd8ab4cc65 100644
--- a/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php
+++ b/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php
@@ -8,6 +8,7 @@
  */
 
 use Carbon\Carbon;
+use Carbon\Exceptions\InvalidFormatException;
 
 /**
  * Import entity product model
@@ -426,6 +427,10 @@ class Mage_ImportExport_Model_Import_Entity_Product extends Mage_ImportExport_Mo
      */
     protected $_urlKeyAttributeId;
 
+    /**
+     * @throws Exception
+     * @throws Mage_Core_Exception
+     */
     public function __construct()
     {
         parent::__construct();
@@ -443,6 +448,8 @@ public function __construct()
      * Delete products.
      *
      * @return $this
+     * @throws Mage_Core_Exception
+     * @throws Zend_Db_Adapter_Exception
      */
     protected function _deleteProducts()
     {
@@ -498,6 +505,7 @@ protected function _importData()
      * Initialize attribute sets code-to-id pairs.
      *
      * @return $this
+     * @throws Mage_Core_Exception
      */
     protected function _initAttributeSets()
     {
@@ -526,8 +534,8 @@ protected function _initCategories()
             $pathSize  = count($structure);
             if ($pathSize > 1) {
                 $path = [];
-                for ($i = 1; $i < $pathSize; $i++) {
-                    $path[] = $collection->getItemById($structure[$i])->getName();
+                for ($pathIndex = 1; $pathIndex < $pathSize; $pathIndex++) {
+                    $path[] = $collection->getItemById($structure[$pathIndex])->getName();
                 }
 
                 $rootCategoryName = array_shift($path);
@@ -564,6 +572,7 @@ protected function _initCustomerGroups()
      * Initialize existent product SKUs.
      *
      * @return $this
+     * @throws Mage_Core_Exception
      */
     protected function _initSkus()
     {
@@ -586,6 +595,7 @@ protected function _initSkus()
      * Initialize stores hash.
      *
      * @return $this
+     * @throws Mage_Core_Exception
      */
     protected function _initStores()
     {
@@ -638,6 +648,7 @@ protected function _initTypeModels()
      * Initialize website values.
      *
      * @return $this
+     * @throws Mage_Core_Exception
      */
     protected function _initWebsites()
     {
@@ -831,6 +842,8 @@ protected function _isProductSkuValid(array $rowData, $rowNum)
      * Custom options save.
      *
      * @return $this
+     * @throws Mage_Core_Exception
+     * @throws Zend_Db_Exception
      */
     protected function _saveCustomOptions()
     {
@@ -1175,6 +1188,8 @@ protected function _saveCustomOptions()
      * Must be called after ALL products saving done.
      *
      * @return $this
+     * @throws Mage_Core_Exception
+     * @throws Zend_Db_Select_Exception
      */
     protected function _saveLinks()
     {
@@ -1289,6 +1304,7 @@ protected function _saveLinks()
      * Save product attributes.
      *
      * @return $this
+     * @throws Zend_Db_Exception
      */
     protected function _saveProductAttributes(array $attributesData)
     {
@@ -1338,6 +1354,7 @@ protected function _saveProductAttributes(array $attributesData)
      * Save product categories.
      *
      * @return $this
+     * @throws Zend_Db_Exception
      */
     protected function _saveProductCategories(array $categoriesData)
     {
@@ -1381,6 +1398,8 @@ protected function _saveProductCategories(array $categoriesData)
      * @param array $entityRowsIn Row for insert
      * @param array $entityRowsUp Row for update
      * @return $this
+     * @throws Mage_Core_Exception
+     * @throws Zend_Db_Exception
      */
     protected function _saveProductEntity(array $entityRowsIn, array $entityRowsUp)
     {
@@ -1416,6 +1435,8 @@ protected function _saveProductEntity(array $entityRowsIn, array $entityRowsUp)
      * Gather and save information about product entities.
      *
      * @return $this
+     * @throws Mage_Core_Exception
+     * @throws Zend_Db_Exception
      */
     protected function _saveProducts()
     {
@@ -1569,8 +1590,8 @@ protected function _saveProducts()
                 );
                 try {
                     $attributes = $this->_prepareAttributes($rowData, $rowScope, $attributes, $rowSku, $rowStore);
-                } catch (Exception $e) {
-                    Mage::logException($e);
+                } catch (Exception $exception) {
+                    Mage::logException($exception);
                     continue;
                 }
             }
@@ -1603,6 +1624,7 @@ protected function _getStrftimeFormat()
      *
      * @param string $code
      * @return Mage_Eav_Model_Entity_Attribute_Abstract
+     * @throws Mage_Core_Exception
      */
     protected function _getAttribute($code)
     {
@@ -1626,6 +1648,8 @@ protected function _getAttribute($code)
      * @param null|string $rowSku
      * @param int $rowStore
      * @return array
+     * @throws Mage_Core_Exception
+     * @throws Mage_Core_Model_Store_Exception
      */
     protected function _prepareAttributes($rowData, $rowScope, $attributes, $rowSku, $rowStore)
     {
@@ -1645,8 +1669,14 @@ protected function _prepareAttributes($rowData, $rowScope, $attributes, $rowSku,
             $attrTable = $attribute->getBackend()->getTable();
             $storeIds = [0];
 
-            if ($attribute->getBackendType() === 'datetime' && Carbon::parse($attrValue)->getTimestamp()) {
-                $attrValue = gmdate(Varien_Date::DATETIME_PHP_FORMAT, Carbon::parse($attrValue)->getTimestamp());
+            try {
+                $timestamp = Carbon::parse($attrValue)->getTimestamp();
+            } catch (InvalidFormatException) {
+                $timestamp = false;
+            }
+
+            if ($attribute->getBackendType() === 'datetime' && $timestamp) {
+                $attrValue = gmdate(Varien_Date::DATETIME_PHP_FORMAT, $timestamp);
             } elseif ($attribute->getAttributeCode() === 'url_key') {
                 if (empty($attrValue)) {
                     $locale = Mage::getStoreConfig(Mage_Core_Model_Locale::XML_PATH_DEFAULT_LOCALE, $product->getStoreId());
@@ -1694,6 +1724,7 @@ protected function _prepareAttributes($rowData, $rowScope, $attributes, $rowSku,
      * Save product tier prices.
      *
      * @return $this
+     * @throws Zend_Db_Exception
      */
     protected function _saveProductTierPrices(array $tierPriceData)
     {
@@ -1737,6 +1768,7 @@ protected function _saveProductTierPrices(array $tierPriceData)
      * Save product group prices.
      *
      * @return $this
+     * @throws Zend_Db_Exception
      */
     protected function _saveProductGroupPrices(array $groupPriceData)
     {
@@ -1780,6 +1812,7 @@ protected function _saveProductGroupPrices(array $groupPriceData)
      * Returns an object for upload a media files
      *
      * @SuppressWarnings("PHPMD.ErrorControlOperator")
+     * @throws Mage_Core_Exception
      */
     protected function _getUploader()
     {
@@ -1827,6 +1860,7 @@ protected function _uploadMediaFiles($fileName)
      * Save product media gallery.
      *
      * @return $this
+     * @throws Zend_Db_Exception
      */
     protected function _saveMediaGallery(array $mediaGalleryData)
     {
@@ -1908,6 +1942,7 @@ protected function _saveMediaGallery(array $mediaGalleryData)
      * Save product websites.
      *
      * @return $this
+     * @throws Zend_Db_Exception
      */
     protected function _saveProductWebsites(array $websiteData)
     {
@@ -1985,6 +2020,7 @@ protected function getModel($modelName)
      * Stock item saving.
      *
      * @return $this
+     * @throws Zend_Db_Exception
      */
     protected function _saveStockItem()
     {

From 7eabcaa5943ca2b8c804a0a9e2436945fa2220fa Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Sat, 6 Dec 2025 00:46:14 +0100
Subject: [PATCH 15/24] fix-10

---
 app/code/core/Mage/Paypal/Model/Express.php | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/app/code/core/Mage/Paypal/Model/Express.php b/app/code/core/Mage/Paypal/Model/Express.php
index c58f9d61966..ddb51e99cc6 100644
--- a/app/code/core/Mage/Paypal/Model/Express.php
+++ b/app/code/core/Mage/Paypal/Model/Express.php
@@ -658,12 +658,13 @@ public function canCapture()
             }
 
             $orderValidPeriod = abs((int) $this->getConfigData('order_valid_period'));
+            if ($orderValidPeriod == 0) {
+                return false;
+            }
 
-            $dateCompass = new DateTime($orderTransaction->getCreatedAt());
-            $dateCompass->modify('+' . $orderValidPeriod . ' days');
+            $dateCompass = Carbon::parse($orderTransaction->getCreatedAt())->addDays($orderValidPeriod);
             $currentDate = Carbon::now();
-
-            if ($currentDate > $dateCompass || $orderValidPeriod == 0) {
+            if ($currentDate > $dateCompass) {
                 return false;
             }
         }

From 126e1f860019bd0e82782297ea0dc46579a79b3b Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Sat, 6 Dec 2025 00:49:41 +0100
Subject: [PATCH 16/24] fix-10.1

---
 app/code/core/Mage/Paypal/Model/Express.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/code/core/Mage/Paypal/Model/Express.php b/app/code/core/Mage/Paypal/Model/Express.php
index ddb51e99cc6..9d9de14f11b 100644
--- a/app/code/core/Mage/Paypal/Model/Express.php
+++ b/app/code/core/Mage/Paypal/Model/Express.php
@@ -658,7 +658,7 @@ public function canCapture()
             }
 
             $orderValidPeriod = abs((int) $this->getConfigData('order_valid_period'));
-            if ($orderValidPeriod == 0) {
+            if (!$orderValidPeriod) {
                 return false;
             }
 

From e7e0c8999fd90c6a38845f6ad8366644702e47d6 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Sat, 6 Dec 2025 00:55:20 +0100
Subject: [PATCH 17/24] sonar-1

---
 app/code/core/Mage/Reports/Model/Test.php | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/app/code/core/Mage/Reports/Model/Test.php b/app/code/core/Mage/Reports/Model/Test.php
index a4b85fe1e79..366b7fc6f4f 100644
--- a/app/code/core/Mage/Reports/Model/Test.php
+++ b/app/code/core/Mage/Reports/Model/Test.php
@@ -70,17 +70,17 @@ public function getTimelineData()
     public function getAllLinearExample()
     {
         $session = Mage::getModel('review/session');
-
         $startPoint = Carbon::now()->subDays(1)->getTimestamp();
+        $format = 'Y-m-d H:i';
 
         $allData = [];
         $countOfStartData = 12;
         for ($i = 1; $i <= $countOfStartData; $i++) {
-            $allData[] = ['time' => Carbon::createFromTimestamp($startPoint)->format('Y-m-d H:i'), 'value' => random_int(1, 100)];
+            $allData[] = ['time' => Carbon::createFromTimestamp($startPoint)->format($format), 'value' => random_int(1, 100)];
             $startPoint += 30 * 60;
         }
 
-        $allData[] = ['time' => Carbon::createFromTimestamp($startPoint + (90 * 60))->format('Y-m-d H:i')];
+        $allData[] = ['time' => Carbon::createFromTimestamp($startPoint + (90 * 60))->format($format)];
 
         $session -> setData('startPoint', $startPoint);
 
@@ -93,17 +93,16 @@ public function getAllLinearExample()
     public function getNewLinearData()
     {
         $session = Mage::getModel('review/session');
-
         $startPoint = $session->getData('startPoint');
-
         $reset = 12;
+        $format = 'Y-m-d H:i';
 
         $newData  = [
-            ['time' => Carbon::createFromTimestamp($startPoint)->format('Y-m-d H:i'), 'value' => random_int(1, 100)],
+            ['time' => Carbon::createFromTimestamp($startPoint)->format($format), 'value' => random_int(1, 100)],
         ];
 
         $startPoint += 30 * 60;
-        $newData[]  = ['time' => Carbon::createFromTimestamp($startPoint + (90 * 60))->format('Y-m-d H:i')];
+        $newData[]  = ['time' => Carbon::createFromTimestamp($startPoint + (90 * 60))->format($format)];
 
         $session->setData('startPoint', $startPoint);
 

From fd72a40fec098e514a4615b32e64a0cabca90fca Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Sat, 6 Dec 2025 01:09:21 +0100
Subject: [PATCH 18/24] sonar-2

---
 .../Mage/Eav/Model/Attribute/Data/Date.php    | 29 ++++++++++++++++---
 1 file changed, 25 insertions(+), 4 deletions(-)

diff --git a/app/code/core/Mage/Eav/Model/Attribute/Data/Date.php b/app/code/core/Mage/Eav/Model/Attribute/Data/Date.php
index 3632da2e7af..ce4c652be6a 100644
--- a/app/code/core/Mage/Eav/Model/Attribute/Data/Date.php
+++ b/app/code/core/Mage/Eav/Model/Attribute/Data/Date.php
@@ -19,7 +19,8 @@ class Mage_Eav_Model_Attribute_Data_Date extends Mage_Eav_Model_Attribute_Data_A
     /**
      * Extract data from request and return value
      *
-     * @return array|false|string
+     * @return false|string
+     * @throws Mage_Core_Exception
      */
     public function extractValue(Zend_Controller_Request_Http $request)
     {
@@ -33,6 +34,8 @@ public function extractValue(Zend_Controller_Request_Http $request)
      *
      * @param array|string $value
      * @return array|bool
+     * @throws Mage_Core_Exception
+     * @throws Mage_Core_Model_Store_Exception
      */
     public function validateValue($value)
     {
@@ -63,12 +66,26 @@ public function validateValue($value)
         if ((!empty($validateRules['date_range_min']) && (Carbon::parse($value)->getTimestamp() < $validateRules['date_range_min']))
             || (!empty($validateRules['date_range_max']) && (Carbon::parse($value)->getTimestamp() > $validateRules['date_range_max']))
         ) {
+            $format = 'd/m/Y';
             if (!empty($validateRules['date_range_min']) && !empty($validateRules['date_range_max'])) {
-                $errors[] = Mage::helper('customer')->__('Please enter a valid date between %s and %s at %s.', Carbon::createFromTimestamp($validateRules['date_range_min'])->format('d/m/Y'), Carbon::createFromTimestamp($validateRules['date_range_max'])->format('d/m/Y'), $label);
+                $errors[] = Mage::helper('customer')->__(
+                    'Please enter a valid date between %s and %s at %s.',
+                    Carbon::createFromTimestamp($validateRules['date_range_min'])->format($format),
+                    Carbon::createFromTimestamp($validateRules['date_range_max'])->format($format),
+                    $label,
+                );
             } elseif (!empty($validateRules['date_range_min'])) {
-                $errors[] = Mage::helper('customer')->__('Please enter a valid date equal to or greater than %s at %s.', Carbon::createFromTimestamp($validateRules['date_range_min'])->format('d/m/Y'), $label);
+                $errors[] = Mage::helper('customer')->__(
+                    'Please enter a valid date equal to or greater than %s at %s.',
+                    Carbon::createFromTimestamp($validateRules['date_range_min'])->format($format),
+                    $label,
+                );
             } elseif (!empty($validateRules['date_range_max'])) {
-                $errors[] = Mage::helper('customer')->__('Please enter a valid date less than or equal to %s at %s.', Carbon::createFromTimestamp($validateRules['date_range_max'])->format('d/m/Y'), $label);
+                $errors[] = Mage::helper('customer')->__(
+                    'Please enter a valid date less than or equal to %s at %s.',
+                    Carbon::createFromTimestamp($validateRules['date_range_max'])->format($format),
+                    $label,
+                );
             }
         }
 
@@ -84,6 +101,7 @@ public function validateValue($value)
      *
      * @param array|string $value
      * @return $this
+     * @throws Mage_Core_Exception
      */
     public function compactValue($value)
     {
@@ -101,6 +119,7 @@ public function compactValue($value)
      *
      * @param array|string $value
      * @return $this
+     * @throws Mage_Core_Exception
      */
     public function restoreValue($value)
     {
@@ -112,6 +131,8 @@ public function restoreValue($value)
      *
      * @param string $format
      * @return array|string
+     * @throws Mage_Core_Exception
+     * @throws Zend_Locale_Exception
      */
     public function outputValue($format = Mage_Eav_Model_Attribute_Data::OUTPUT_FORMAT_TEXT)
     {

From 6fa6036e19a4792d1cc35dfee22ee3bce1f85ffd Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Sat, 6 Dec 2025 02:14:53 +0100
Subject: [PATCH 19/24] typo

---
 app/code/core/Mage/Cron/Model/Observer.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/code/core/Mage/Cron/Model/Observer.php b/app/code/core/Mage/Cron/Model/Observer.php
index 604efd4818a..180766325cb 100644
--- a/app/code/core/Mage/Cron/Model/Observer.php
+++ b/app/code/core/Mage/Cron/Model/Observer.php
@@ -194,8 +194,8 @@ protected function _generateJobs($jobs, $exists)
                 ->setStatus(Mage_Cron_Model_Schedule::STATUS_PENDING);
 
             for ($time = $now; $time < $timeAhead; $time += 60) {
-                $timstamp = Carbon::createFromTimestamp($time)->format('Y-m-d H:i:00');
-                if (!empty($exists[$jobCode . '/' . $timstamp])) {
+                $timestamp = Carbon::createFromTimestamp($time)->format('Y-m-d H:i:00');
+                if (!empty($exists[$jobCode . '/' . $timestamp])) {
                     // already scheduled
                     continue;
                 }

From 0c7680f103d7d2b32d75a96fb149984dac559710 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Sat, 6 Dec 2025 02:30:15 +0100
Subject: [PATCH 20/24] fix

---
 .../core/Mage/ImportExport/Model/Import/Entity/Abstract.php     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php b/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php
index b09840b18f5..b6a06274454 100644
--- a/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php
+++ b/app/code/core/Mage/ImportExport/Model/Import/Entity/Abstract.php
@@ -575,7 +575,7 @@ public function isAttributeValid($attrCode, array $attrParams, array $rowData, $
                     $valid = false;
                 }
 
-                $valid !== false || preg_match('/^\d{2}.\d{2}.\d{2,4}(?:\s+\d{1,2}.\d{1,2}(?:.\d{1,2})?)?$/', $val);
+                $valid = $valid !== false || preg_match('/^\d{2}.\d{2}.\d{2,4}(?:\s+\d{1,2}.\d{1,2}(?:.\d{1,2})?)?$/', $val);
                 break;
             case 'text':
                 $val   = Mage::helper('core/string')->cleanString($rowData[$attrCode]);

From e449c5ce52079a5b665b3d19f209e79a61075e93 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Sat, 6 Dec 2025 03:01:53 +0100
Subject: [PATCH 21/24] test

---
 tests/unit/Base/CarbonTest.php | 48 ++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 tests/unit/Base/CarbonTest.php

diff --git a/tests/unit/Base/CarbonTest.php b/tests/unit/Base/CarbonTest.php
new file mode 100644
index 00000000000..58aee8baeea
--- /dev/null
+++ b/tests/unit/Base/CarbonTest.php
@@ -0,0 +1,48 @@
+<?php
+
+/**
+ * @copyright  For copyright and license information, read the COPYING.txt file.
+ * @link       /COPYING.txt
+ * @license    Open Software License (OSL 3.0)
+ * @package    OpenMage_Tests
+ */
+
+declare(strict_types=1);
+
+namespace OpenMage\Tests\Unit\Base;
+
+use Carbon\Carbon;
+use PHPUnit\Framework\TestCase;
+use Varien_Date;
+
+final class CarbonTest extends TestCase
+{
+    /**
+     * @group Carbon
+     */
+    public function testDate(): void
+    {
+        $timestamp = mktime(0, 0, 0, 1, 2, random_int(2006, 2007));
+        self::assertSame(
+            date(Varien_Date::DATETIME_PHP_FORMAT, $timestamp),
+            Carbon::createFromTimestamp($timestamp)->format(Varien_Date::DATETIME_PHP_FORMAT)
+        );
+    }
+
+    /**
+     * @group Carbon
+     */
+    public function testTime(): void
+    {
+        self::assertSame(time(), Carbon::now()->getTimestamp());
+    }
+
+    /**
+     * @group Carbon
+     */
+    public function testStrtotime(): void
+    {
+        $dateString = '2024-01-15 14:30:00';
+        self::assertSame(strtotime($dateString), Carbon::parse($dateString)->getTimestamp());
+    }
+}

From 3502cb92cd475b76ea194b995b30302778a8a8ef Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Sat, 6 Dec 2025 03:04:07 +0100
Subject: [PATCH 22/24] typo

---
 tests/unit/Base/CarbonTest.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/unit/Base/CarbonTest.php b/tests/unit/Base/CarbonTest.php
index 58aee8baeea..6be7a7a1e89 100644
--- a/tests/unit/Base/CarbonTest.php
+++ b/tests/unit/Base/CarbonTest.php
@@ -25,7 +25,7 @@ public function testDate(): void
         $timestamp = mktime(0, 0, 0, 1, 2, random_int(2006, 2007));
         self::assertSame(
             date(Varien_Date::DATETIME_PHP_FORMAT, $timestamp),
-            Carbon::createFromTimestamp($timestamp)->format(Varien_Date::DATETIME_PHP_FORMAT)
+            Carbon::createFromTimestamp($timestamp)->format(Varien_Date::DATETIME_PHP_FORMAT),
         );
     }
 

From cc06ce662a5095d3f1257ff40042cdb293caddf5 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Sat, 6 Dec 2025 03:17:03 +0100
Subject: [PATCH 23/24] rector

---
 .rector.php | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/.rector.php b/.rector.php
index 25e7ced4de2..4474b2b8db5 100644
--- a/.rector.php
+++ b/.rector.php
@@ -2,6 +2,7 @@
 
 declare(strict_types=1);
 
+use Rector\Carbon\Rector as Carbon;
 use Rector\Caching\ValueObject\Storage\FileCacheStorage;
 use Rector\CodeQuality\Rector as CodeQuality;
 use Rector\CodingStyle\Rector as CodingStyle;
@@ -61,6 +62,12 @@
             new RenameClassAndConstFetch('Zend_Measure_Weight', 'POUND', 'Mage_Core_Helper_Measure_Weight', 'POUND'),
         ])
         ->withSkip([
+            Carbon\FuncCall\DateFuncCallToCarbonRector::class => [
+                __DIR__ . '/tessts/unit/Base/CarbonTest.php',
+            ],
+           Carbon\FuncCall\TimeFuncCallToCarbonRector::class => [
+                __DIR__ . '/tessts/unit/Base/CarbonTest.php',
+            ],
             CodeQuality\BooleanNot\SimplifyDeMorganBinaryRector::class,
             # skip: causes issues with Mage_Api2_Model_Auth_Adapter_Oauth::getUserParams()
             CodeQuality\Catch_\ThrowWithPreviousExceptionRector::class => [

From 395e7a8bbfbdf24d940f30fa77084dbade001b0b Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Sun, 7 Dec 2025 04:17:02 +0100
Subject: [PATCH 24/24] typo

---
 .rector.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.rector.php b/.rector.php
index 4474b2b8db5..7f4b9e35ffc 100644
--- a/.rector.php
+++ b/.rector.php
@@ -63,10 +63,10 @@
         ])
         ->withSkip([
             Carbon\FuncCall\DateFuncCallToCarbonRector::class => [
-                __DIR__ . '/tessts/unit/Base/CarbonTest.php',
+                __DIR__ . '/tests/unit/Base/CarbonTest.php',
             ],
            Carbon\FuncCall\TimeFuncCallToCarbonRector::class => [
-                __DIR__ . '/tessts/unit/Base/CarbonTest.php',
+                __DIR__ . '/tests/unit/Base/CarbonTest.php',
             ],
             CodeQuality\BooleanNot\SimplifyDeMorganBinaryRector::class,
             # skip: causes issues with Mage_Api2_Model_Auth_Adapter_Oauth::getUserParams()