public static function finalDayOfYear($ts = null)
	{
		return sfTime::subtractDay(sfTime::firstDayOfYear(sfTime::addYear($ts)));
	}
public static function finalDayOfYear($ts = null)
	{
		return sfTime::subtractDay(sfTime::firstDayOfYear(sfTime::addYear($ts)));
	}
public static function finalDayOfYear ( $ ts = null ) { return sfTime :: subtractDay ( sfTime :: firstDayOfYear ( sfTime :: addYear ( $ ts ) ) ) ; }
Returns the timestamp for last day of the year for the given date.

@param	timestamp
@return	timestamp
Returns the timestamp for last day of the year for the given date .