diff --git a/modules/oe_media_circabc/src/CircaBcMediaMapper.php b/modules/oe_media_circabc/src/CircaBcMediaMapper.php
index d7c3757f..2dc185af 100644
--- a/modules/oe_media_circabc/src/CircaBcMediaMapper.php
+++ b/modules/oe_media_circabc/src/CircaBcMediaMapper.php
@@ -72,9 +72,9 @@ public function mapDocumentMedia(CircaBcDocument $document, MediaInterface $medi
     }
 
     // Set the created and changed dates.
-    $created = \DateTime::createFromFormat('Y-m-d\TH:iZ', $document->getProperty('created'));
+    $created = \DateTime::createFromFormat('Y-m-d\TH:iZ', $document->getProperty('created'), new \DateTimeZone('UTC'));
     $media->setCreatedTime($created->getTimestamp());
-    $changed = \DateTime::createFromFormat('Y-m-d\TH:iZ', $document->getProperty('modified'));
+    $changed = \DateTime::createFromFormat('Y-m-d\TH:iZ', $document->getProperty('modified'), new \DateTimeZone('UTC'));
     $media->setChangedTime($changed->getTimestamp());
 
     // Handle translations.
@@ -137,12 +137,12 @@ protected function mapTranslations(CircaBcDocument $document, MediaInterface $me
 
       // Set the created and changed dates if they are translatable.
       if ($media->getFieldDefinition('created')->isTranslatable()) {
-        $created = \DateTime::createFromFormat('Y-m-d\TH:iZ', $document_translation->getProperty('created'));
+        $created = \DateTime::createFromFormat('Y-m-d\TH:iZ', $document_translation->getProperty('created'), new \DateTimeZone('UTC'));
         $media_translation->setCreatedTime($created->getTimestamp());
       }
 
-      if ($media->getFieldDefinition('created')->isTranslatable()) {
-        $changed = \DateTime::createFromFormat('Y-m-d\TH:iZ', $document_translation->getProperty('modified'));
+      if ($media->getFieldDefinition('changed')->isTranslatable()) {
+        $changed = \DateTime::createFromFormat('Y-m-d\TH:iZ', $document_translation->getProperty('modified'), new \DateTimeZone('UTC'));
         $media_translation->setChangedTime($changed->getTimestamp());
       }
     }
diff --git a/modules/oe_media_circabc/tests/src/Kernel/DocumentMediaTest.php b/modules/oe_media_circabc/tests/src/Kernel/DocumentMediaTest.php
index be98657b..f53534ce 100644
--- a/modules/oe_media_circabc/tests/src/Kernel/DocumentMediaTest.php
+++ b/modules/oe_media_circabc/tests/src/Kernel/DocumentMediaTest.php
@@ -5,11 +5,11 @@
 namespace Drupal\Tests\oe_media_circabc\Kernel;
 
 use Drupal\Core\Site\Settings;
+use Drupal\Tests\oe_media\Kernel\MediaTestBase;
 use Drupal\datetime\Plugin\Field\FieldType\DateTimeItemInterface;
 use Drupal\field\Entity\FieldConfig;
 use Drupal\language\Entity\ConfigurableLanguage;
 use Drupal\oe_media_circabc\Plugin\views\query\CircaBcQuery;
-use Drupal\Tests\oe_media\Kernel\MediaTestBase;
 use Drupal\views\ViewExecutable;
 use Drupal\views\Views;
 
@@ -99,8 +99,8 @@ public function testPivotCircaBcSync(): void {
     $this->assertEquals('application/pdf', $reference['mime']);
     $this->assertEquals('sample_pdf.pdf', $reference['filename']);
     $this->assertEquals('Test sample file', $media->label());
-    $this->assertEquals('2023-10-25T05:55:00', (new \DateTime())->setTimestamp((int) $media->getCreatedTime())->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT));
-    $this->assertEquals('2023-10-26T05:55:00', (new \DateTime())->setTimestamp((int) $media->getChangedTime())->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT));
+    $this->assertEquals('2023-10-25T05:55:00', (new \DateTime())->setTimestamp((int) $media->getCreatedTime())->setTimezone(new \DateTimeZone('UTC'))->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT));
+    $this->assertEquals('2023-10-26T05:55:00', (new \DateTime())->setTimestamp((int) $media->getChangedTime())->setTimezone(new \DateTimeZone('UTC'))->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT));
 
     // Assert the translations (no translations as the media is not
     // translatable).
@@ -134,8 +134,8 @@ public function testPivotCircaBcSync(): void {
     $media_storage->resetCache();
     /** @var \Drupal\media\MediaInterface $media */
     $media = $media_storage->load($media->id());
-    $this->assertEquals('2023-10-25T05:55:00', (new \DateTime())->setTimestamp((int) $media->getCreatedTime())->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT));
-    $this->assertEquals('2023-10-26T05:55:00', (new \DateTime())->setTimestamp((int) $media->getChangedTime())->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT));
+    $this->assertEquals('2023-10-25T05:55:00', (new \DateTime())->setTimestamp((int) $media->getCreatedTime())->setTimezone(new \DateTimeZone('UTC'))->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT));
+    $this->assertEquals('2023-10-26T05:55:00', (new \DateTime())->setTimestamp((int) $media->getChangedTime())->setTimezone(new \DateTimeZone('UTC'))->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT));
     $french = $media->getTranslation('fr');
     $this->assertEquals('Test sample file FR', $french->label());
     $reference = $french->get('oe_media_circabc_reference')->first()->getValue();
@@ -145,8 +145,8 @@ public function testPivotCircaBcSync(): void {
     $this->assertEquals('sample_pdf_FR.pdf', $reference['filename']);
     $this->assertTrue($media->getFieldDefinition('created')->isTranslatable());
     $this->assertTrue($media->getFieldDefinition('changed')->isTranslatable());
-    $this->assertEquals('2023-10-23T05:55:00', (new \DateTime())->setTimestamp((int) $french->getCreatedTime())->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT));
-    $this->assertEquals('2023-10-27T08:05:00', (new \DateTime())->setTimestamp((int) $french->getChangedTime())->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT));
+    $this->assertEquals('2023-10-23T05:55:00', (new \DateTime())->setTimestamp((int) $french->getCreatedTime())->setTimezone(new \DateTimeZone('UTC'))->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT));
+    $this->assertEquals('2023-10-27T08:05:00', (new \DateTime())->setTimestamp((int) $french->getChangedTime())->setTimezone(new \DateTimeZone('UTC'))->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT));
 
     $portuguese = $media->getTranslation('pt-pt');
     $this->assertEquals('Test sample file PT', $portuguese->label());