Set the DB timezone on each connection to match the APP_TIMEZONE value

app/Helpers/Time.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Pterodactyl\Helpers;
+
+use Carbon\CarbonImmutable;
+
+final class Time
+{
+    /**
+     * Gets the time offset from the provided timezone relative to UTC as a number. This
+     * is used in the database configuration since we can't always rely on there being support
+     * for named timezones in MySQL.
+     *
+     * Returns the timezone as a string like +08:00 or -05:00 depending on the app timezone.
+     *
+     * @param string $timezone
+     * @return string
+     */
+    public static function getMySQLTimezoneOffset(string $timezone): string
+    {
+        $offset = round(CarbonImmutable::now($timezone)->getTimezone()->getOffset(CarbonImmutable::now('UTC')) / 3600);
+
+        return sprintf('%s%s:00', $offset > 0 ? '+' : '-', str_pad(abs($offset), 2, '0', STR_PAD_LEFT));
+    }
+}

config/database.php

@@ -1,5 +1,7 @@
 <?php
 
+use Pterodactyl\Helpers\Time;
+
 return [
     /*
     |--------------------------------------------------------------------------
@@ -43,6 +45,7 @@ return [
             'collation' => 'utf8mb4_unicode_ci',
             'prefix' => env('DB_PREFIX', ''),
             'strict' => env('DB_STRICT_MODE', false),
+            'timezone' => env('DB_TIMEZONE', Time::getMySQLTimezoneOffset(env('APP_TIMEZONE')))
         ],
 
         /*
@@ -65,6 +68,7 @@ return [
             'collation' => 'utf8mb4_unicode_ci',
             'prefix' => '',
             'strict' => false,
+            'timezone' => env('DB_TIMEZONE', Time::getMySQLTimezoneOffset(env('APP_TIMEZONE')))
         ],
     ],