class sachsen extends calendar
{
    public function __construct( $year )
    {
        parent::__construct( $year );
        $this->holidays[] = '31.10.'; // Reformationstag
        $this->holidays[] = $this->getBussUndBettag(); // Buß- und Bettag
    }

    /**
     * @return false|string
     */
    function getBussUndBettag()
    {
        $timestamp = strtotime( '26.11.' . $this->year );

        do
        {
            $timestamp = strtotime( '+ 1 day', $timestamp );
        } while( date( 'w', $timestamp ) != 0 );

        $timestamp = strtotime( '-11 day', $timestamp );
        return date( 'd.m.', $timestamp );
    }
}