public static function finalDayOfQuarter($ts = null)
	{
		return sfTime::subtractDay(sfTime::firstDayOfQuarter(sfTime::addQuarter($ts)));
	}
public static function finalDayOfQuarter($ts = null)
	{
		return sfTime::subtractDay(sfTime::firstDayOfQuarter(sfTime::addQuarter($ts)));
	}
public static function finalDayOfQuarter ( $ ts = null ) { return sfTime :: subtractDay ( sfTime :: firstDayOfQuarter ( sfTime :: addQuarter ( $ ts ) ) ) ; }
Returns the timestamp for last day of the quarter for the given date.

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