diff --git a/vendor/magento/module-sales-graph-ql/Model/Formatter/Order.php b/vendor/magento/module-sales-graph-ql/Model/Formatter/Order.php
index 06afec2ac2ef8..9f0cd1a2981fe 100644
--- a/vendor/magento/module-sales-graph-ql/Model/Formatter/Order.php
+++ b/vendor/magento/module-sales-graph-ql/Model/Formatter/Order.php
@@ -48,8 +48,15 @@ public function format(OrderInterface $orderModel): array
             'id' => base64_encode((string)$orderModel->getEntityId()),
             'increment_id' => $orderModel->getIncrementId(),
             'number' => $orderModel->getIncrementId(),
-            'order_date' => $this->timezone->date($orderModel->getCreatedAt())
-                ->format(DateTime::DATETIME_PHP_FORMAT),
+            'order_date' => $this->timezone->date(
+                $orderModel->getCreatedAt()
+                    ? \DateTime::createFromFormat(
+                        DateTime::DATETIME_PHP_FORMAT,
+                        $orderModel->getCreatedAt(),
+                        new \DateTimeZone('UTC')
+                    )
+                    : null
+            )->format(DateTime::DATETIME_PHP_FORMAT),
             'order_number' => $orderModel->getIncrementId(),
             'status' => $orderModel->getStatusLabel(),
             'email' => $orderModel->getCustomerEmail(),
diff --git a/vendor/magento/module-sales-graph-ql/Model/Resolver/CreditMemo/CreditMemoComments.php b/vendor/magento/module-sales-graph-ql/Model/Resolver/CreditMemo/CreditMemoComments.php
index f243024174491..8fd625de44549 100644
--- a/vendor/magento/module-sales-graph-ql/Model/Resolver/CreditMemo/CreditMemoComments.php
+++ b/vendor/magento/module-sales-graph-ql/Model/Resolver/CreditMemo/CreditMemoComments.php
@@ -52,8 +52,15 @@ public function resolve(
             if ($comment->getIsVisibleOnFront()) {
                 $comments[] = [
                     'message' => $comment->getComment(),
-                    'timestamp' => $this->timezone->date($comment->getCreatedAt())
-                        ->format(DateTime::DATETIME_PHP_FORMAT)
+                    'timestamp' => $this->timezone->date(
+                        $comment->getCreatedAt()
+                            ? \DateTime::createFromFormat(
+                                DateTime::DATETIME_PHP_FORMAT,
+                                $comment->getCreatedAt(),
+                                new \DateTimeZone('UTC')
+                            )
+                            : null
+                    )->format(DateTime::DATETIME_PHP_FORMAT)
                 ];
             }
         }
diff --git a/vendor/magento/module-sales-graph-ql/Model/Resolver/Invoices.php b/vendor/magento/module-sales-graph-ql/Model/Resolver/Invoices.php
index d08f2d6d1a8ba..cdaae62dd8fc6 100644
--- a/vendor/magento/module-sales-graph-ql/Model/Resolver/Invoices.php
+++ b/vendor/magento/module-sales-graph-ql/Model/Resolver/Invoices.php
@@ -73,8 +73,15 @@ private function getInvoiceComments(InvoiceInterface $invoice): array
         foreach ($invoice->getComments() as $comment) {
             if ($comment->getIsVisibleOnFront()) {
                 $comments[] = [
-                    'timestamp' => $this->timezone->date($comment->getCreatedAt())
-                        ->format(DateTime::DATETIME_PHP_FORMAT),
+                    'timestamp' => $this->timezone->date(
+                        $comment->getCreatedAt()
+                            ? \DateTime::createFromFormat(
+                                DateTime::DATETIME_PHP_FORMAT,
+                                $comment->getCreatedAt(),
+                                new \DateTimeZone('UTC')
+                            )
+                            : null
+                    )->format(DateTime::DATETIME_PHP_FORMAT),
                     'message' => $comment->getComment()
                 ];
             }
diff --git a/vendor/magento/module-sales-graph-ql/Model/Resolver/Shipments.php b/vendor/magento/module-sales-graph-ql/Model/Resolver/Shipments.php
index b923b1e9e2fc0..cb02217ebe05c 100644
--- a/vendor/magento/module-sales-graph-ql/Model/Resolver/Shipments.php
+++ b/vendor/magento/module-sales-graph-ql/Model/Resolver/Shipments.php
@@ -74,8 +74,15 @@ private function getShipmentComments(ShipmentInterface $shipment): array
         foreach ($shipment->getComments() as $comment) {
             if ($comment->getIsVisibleOnFront()) {
                 $comments[] = [
-                    'timestamp' => $this->timezone->date($comment->getCreatedAt())
-                        ->format(DateTime::DATETIME_PHP_FORMAT),
+                    'timestamp' => $this->timezone->date(
+                        $comment->getCreatedAt()
+                            ? \DateTime::createFromFormat(
+                                DateTime::DATETIME_PHP_FORMAT,
+                                $comment->getCreatedAt(),
+                                new \DateTimeZone('UTC')
+                            )
+                            : null
+                    )->format(DateTime::DATETIME_PHP_FORMAT),
                     'message' => $comment->getComment()
                 ];
             }