CTaskNotifications::getUserTimeZoneOffset

static function getUserTimeZoneOffset($userId = 'current')
{
	if(!isset(self::$cache['TIMEZONE'][$userId]) || !self::$cacheData)
	{
		self::$cache['TIMEZONE'][$userId] = CTasksTools::getTimeZoneOffset($userId == 'current' ? false : $userId);
	}

	return self::$cache['TIMEZONE'][$userId];
}