diff --git a/app/src/ViewFunctions/ModifiedTime.php b/app/src/ViewFunctions/ModifiedTime.php
index 420636e..4df9780 100644
--- a/app/src/ViewFunctions/ModifiedTime.php
+++ b/app/src/ViewFunctions/ModifiedTime.php
@@ -5,6 +5,8 @@ declare(strict_types=1);
 namespace App\ViewFunctions;
 
 use App\Config;
+use DateTimeImmutable;
+use DateTimeZone;
 use RuntimeException;
 use Symfony\Component\Finder\SplFileInfo;
 
@@ -26,6 +28,10 @@ class ModifiedTime extends ViewFunction
             $modifiedTime = lstat($file->getPathname())['mtime'];
         }
 
-        return date($this->config->get('date_format'), $modifiedTime);
+        $date = DateTimeImmutable::createFromTimestamp($modifiedTime)->setTimezone(
+            new DateTimeZone($this->config->get('timezone'))
+        );
+
+        return $date->format($this->config->get('date_format'));
     }
 }
diff --git a/tests/ViewFunctions/ModifiedTimeTest.php b/tests/ViewFunctions/ModifiedTimeTest.php
index dc8cb53..4c9f200 100644
--- a/tests/ViewFunctions/ModifiedTimeTest.php
+++ b/tests/ViewFunctions/ModifiedTimeTest.php
@@ -16,6 +16,8 @@ class ModifiedTimeTest extends TestCase
     #[Test]
     public function it_can_return_the_modified_time_for_a_file(): void
     {
+        $this->container->set('timezone', 'UTC');
+
         $file = $this->createMock(SplFileInfo::class);
         $file->method('getMTime')->willReturn(516976496);