--- zabbix-2.0.5.m/frontends/php/maintenance.php	2013-02-13 20:38:07.000000000 +0900
+++ zabbix-2.0.5/frontends/php/maintenance.php	2013-07-04 13:18:13.246333296 +0900
@@ -380,7 +380,7 @@ elseif (isset($_REQUEST['edit_timeperiod
 	if (isset($_REQUEST['timeperiods'][$edit_timeperiodid])) {
 		$_REQUEST['new_timeperiod'] = $_REQUEST['timeperiods'][$edit_timeperiodid];
 		$_REQUEST['new_timeperiod']['id'] = $edit_timeperiodid;
-		$_REQUEST['new_timeperiod']['start_date'] = date('YmdHi', $_REQUEST['timeperiods'][$edit_timeperiodid]['start_date']);
+		$_REQUEST['new_timeperiod']['start_date'] = $_REQUEST['timeperiods'][$edit_timeperiodid]['start_date'];
 	}
 }