diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 9263833b4c..19e59f2ddb 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -1145,7 +1145,7 @@ function tz_select($default = '', $truncate = false, $return_tzs_only = true)
 		foreach ($unsorted_timezones as $timezone)
 		{
 			$tz = new DateTimeZone($timezone);
-			$dt = new phpbb_datetime('now', $tz);
+			$dt = new phpbb_datetime('now', $tz, $user);
 			$offset = $dt->getOffset();
 			$current_time = $dt->format($user->lang['DATETIME_FORMAT'], true);
 			$offset_string = phpbb_format_timezone_offset($offset);
@@ -4794,7 +4794,7 @@ function page_header($page_title = '', $display_online_list = true, $item_id = 0
 		}
 	}
 
-	$dt = new phpbb_datetime('now', $user->tz);
+	$dt = new phpbb_datetime('now', $user->tz, $user);
 	$timezone_offset = 'GMT' . phpbb_format_timezone_offset($dt->getOffset());
 	$timezone_name = $user->tz->getName();
 	if (isset($user->lang['timezones'][$timezone_name]))