diff --git a/src/Illuminate/Bus/DatabaseBatchRepository.php b/src/Illuminate/Bus/DatabaseBatchRepository.php
index 4333c515ac79..a4ede3253185 100644
--- a/src/Illuminate/Bus/DatabaseBatchRepository.php
+++ b/src/Illuminate/Bus/DatabaseBatchRepository.php
@@ -374,9 +374,9 @@ protected function toBatch($batch)
             (int) $batch->failed_jobs,
             (array) json_decode($batch->failed_job_ids, true),
             $this->unserialize($batch->options),
-            CarbonImmutable::createFromTimestamp($batch->created_at),
-            $batch->cancelled_at ? CarbonImmutable::createFromTimestamp($batch->cancelled_at) : $batch->cancelled_at,
-            $batch->finished_at ? CarbonImmutable::createFromTimestamp($batch->finished_at) : $batch->finished_at
+            CarbonImmutable::createFromTimestamp($batch->created_at, date_default_timezone_get()),
+            $batch->cancelled_at ? CarbonImmutable::createFromTimestamp($batch->cancelled_at, date_default_timezone_get()) : $batch->cancelled_at,
+            $batch->finished_at ? CarbonImmutable::createFromTimestamp($batch->finished_at, date_default_timezone_get()) : $batch->finished_at
         );
     }
 
diff --git a/src/Illuminate/Bus/DynamoBatchRepository.php b/src/Illuminate/Bus/DynamoBatchRepository.php
index 7753fa21297c..b0dc34a10733 100644
--- a/src/Illuminate/Bus/DynamoBatchRepository.php
+++ b/src/Illuminate/Bus/DynamoBatchRepository.php
@@ -411,9 +411,9 @@ protected function toBatch($batch)
             (int) $batch->failed_jobs,
             $batch->failed_job_ids,
             $this->unserialize($batch->options) ?? [],
-            CarbonImmutable::createFromTimestamp($batch->created_at),
-            $batch->cancelled_at ? CarbonImmutable::createFromTimestamp($batch->cancelled_at) : $batch->cancelled_at,
-            $batch->finished_at ? CarbonImmutable::createFromTimestamp($batch->finished_at) : $batch->finished_at
+            CarbonImmutable::createFromTimestamp($batch->created_at, date_default_timezone_get()),
+            $batch->cancelled_at ? CarbonImmutable::createFromTimestamp($batch->cancelled_at, date_default_timezone_get()) : $batch->cancelled_at,
+            $batch->finished_at ? CarbonImmutable::createFromTimestamp($batch->finished_at, date_default_timezone_get()) : $batch->finished_at
         );
     }
 
diff --git a/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php b/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php
index 10187f50d701..94e6e95f5288 100644
--- a/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php
+++ b/src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php
@@ -1459,7 +1459,7 @@ protected function asDateTime($value)
         // and format a Carbon object from this timestamp. This allows flexibility
         // when defining your date fields as they might be UNIX timestamps here.
         if (is_numeric($value)) {
-            return Date::createFromTimestamp($value);
+            return Date::createFromTimestamp($value, date_default_timezone_get());
         }
 
         // If the value is in simply year, month, day format, we will instantiate the
diff --git a/src/Illuminate/Http/Middleware/SetCacheHeaders.php b/src/Illuminate/Http/Middleware/SetCacheHeaders.php
index 6229e4cfd171..4b34061ae715 100644
--- a/src/Illuminate/Http/Middleware/SetCacheHeaders.php
+++ b/src/Illuminate/Http/Middleware/SetCacheHeaders.php
@@ -56,7 +56,7 @@ public function handle($request, Closure $next, $options = [])
 
         if (isset($options['last_modified'])) {
             if (is_numeric($options['last_modified'])) {
-                $options['last_modified'] = Carbon::createFromTimestamp($options['last_modified']);
+                $options['last_modified'] = Carbon::createFromTimestamp($options['last_modified'], date_default_timezone_get());
             } else {
                 $options['last_modified'] = Carbon::parse($options['last_modified']);
             }
diff --git a/src/Illuminate/Queue/Failed/DynamoDbFailedJobProvider.php b/src/Illuminate/Queue/Failed/DynamoDbFailedJobProvider.php
index 226c752e94ef..a6df62e6a251 100644
--- a/src/Illuminate/Queue/Failed/DynamoDbFailedJobProvider.php
+++ b/src/Illuminate/Queue/Failed/DynamoDbFailedJobProvider.php
@@ -119,7 +119,7 @@ public function all()
                 'payload' => $result['payload']['S'],
                 'exception' => $result['exception']['S'],
                 'failed_at' => Carbon::createFromTimestamp(
-                    (int) $result['failed_at']['N']
+                    (int) $result['failed_at']['N'], date_default_timezone_get()
                 )->format(DateTimeInterface::ISO8601),
             ];
         })->all();
@@ -152,7 +152,7 @@ public function find($id)
             'payload' => $result['Item']['payload']['S'],
             'exception' => $result['Item']['exception']['S'],
             'failed_at' => Carbon::createFromTimestamp(
-                (int) $result['Item']['failed_at']['N']
+                (int) $result['Item']['failed_at']['N'], date_default_timezone_get()
             )->format(DateTimeInterface::ISO8601),
         ];
     }
diff --git a/src/Illuminate/Support/Sleep.php b/src/Illuminate/Support/Sleep.php
index e5ae861834c7..ebb8f4215b03 100644
--- a/src/Illuminate/Support/Sleep.php
+++ b/src/Illuminate/Support/Sleep.php
@@ -92,7 +92,7 @@ public static function for($duration)
     public static function until($timestamp)
     {
         if (is_numeric($timestamp)) {
-            $timestamp = Carbon::createFromTimestamp($timestamp);
+            $timestamp = Carbon::createFromTimestamp($timestamp, date_default_timezone_get());
         }
 
         return new static(Carbon::now()->diff($timestamp));
diff --git a/src/Illuminate/Testing/TestResponse.php b/src/Illuminate/Testing/TestResponse.php
index 02a179171619..7cc4261b24e0 100644
--- a/src/Illuminate/Testing/TestResponse.php
+++ b/src/Illuminate/Testing/TestResponse.php
@@ -432,7 +432,7 @@ public function assertCookieExpired($cookieName)
             "Cookie [{$cookieName}] not present on response."
         );
 
-        $expiresAt = Carbon::createFromTimestamp($cookie->getExpiresTime());
+        $expiresAt = Carbon::createFromTimestamp($cookie->getExpiresTime(), date_default_timezone_get());
 
         PHPUnit::assertTrue(
             $cookie->getExpiresTime() !== 0 && $expiresAt->lessThan(Carbon::now()),
@@ -455,7 +455,7 @@ public function assertCookieNotExpired($cookieName)
             "Cookie [{$cookieName}] not present on response."
         );
 
-        $expiresAt = Carbon::createFromTimestamp($cookie->getExpiresTime());
+        $expiresAt = Carbon::createFromTimestamp($cookie->getExpiresTime(), date_default_timezone_get());
 
         PHPUnit::assertTrue(
             $cookie->getExpiresTime() === 0 || $expiresAt->greaterThan(Carbon::now()),