January 13th is celebrated in Sweden and Finland as St Knut’s Day, the 20th and last day of Christmas. A proverb says “Twentieth day Knut driveth Yule out.” The Knut (or Canute) in question was a murdered 12th-century Danish duke who was later canonized On this date Christmas trees are taken down and any remaining edible treats on the tree are consumed. The party that accompanies this is called a Julgransplundring, (“Christmas tree plundering”).
In some parts of Finland on Nuutinpäivä, it was traditional for young men to disguise themselves as sinister goats and go door to door demanding hospitality, especially of the alcoholic kind. Today, however, the custom is more innocent and largely restricted to children.