CSupportTimetableCache::GetTimeZone

static function GetTimeZone()
{		
	if(self::$timeZone === null)
	{
		if(self::Possible())
		{
			self::$timeZone = new DateTimeZone(date_default_timezone_get());
			$serverZone = COption::GetOptionString("main", "default_time_zone", "");
			if($serverZone != "") self::$timeZone = new DateTimeZone($serverZone);
		}
	}
	return self::$timeZone;		
}