Version 4.7.8

system/DateTime/DateTime.php

@@ -35,7 +35,6 @@ class _DateTime extends \DateTime
 		$obj->setTimestamp( (int) $timestamp );
 		if ( !$bypassTimezone AND \IPS\Dispatcher::hasInstance() and \IPS\Member::loggedIn()->timezone )
 		{
-			$validTimezone = TRUE;
 			if( \in_array( \IPS\Member::loggedIn()->timezone, static::getTimezoneIdentifiers() ) )
 			{
 				try
@@ -44,24 +43,9 @@ class _DateTime extends \DateTime
 				}
 				catch ( \Exception $e )
 				{
-					$validTimezone = FALSE;
+					
 				}
 			}
-			else
-			{
-				$validTimezone = FALSE;
-			}
-
-			if( ! $validTimezone )
-			{
-				\IPS\Member::loggedIn()->timezone = null;
-
-				if ( \IPS\Member::loggedIn()->member_id )
-				{
-					\IPS\Member::loggedIn()->save();
-				}
-			}
-
 		}
 		return $obj;
 	}
@@ -99,7 +83,14 @@ class _DateTime extends \DateTime
 		{
 			return 'America/Argentina/' . \substr( $timezone, 8 );
 		}
-		return $timezone;
+
+		/* Chromium reports the wrong timezones for these locations - https://bugs.chromium.org/p/chromium/issues/detail?id=580195 */
+		return match ( $timezone )
+		{
+			'Asia/Calcutta' => 'Asia/Kolkata',
+			'Asia/Katmandu' => 'Asia/Kathmandu',
+			default => $timezone,
+		};
 	}
 	
 	/**