Polish Christmas traditions include: Santa Claus visiting on December 6th bringing presents; decorating Christmas trees before Christmas; hanging mistletoe which is believed to bring happiness throughout the year; having hay on the table to symbolize Jesus sleeping in a manger; and believing the first guest on Christmas Eve determines if the new year will be lucky or unlucky depending on their gender. The most important day is Christmas Eve when families exchange wishes while breaking holy wafer and attending Pasterka, the midnight mass. Celebrations continue on St. Stephen's Day and include singing carols while visiting relatives.