About St. Knut's Day
St. Knut's Day (Tjugondag Knut, or "The 20th Day of Knut") marks the end of the Christmas season in Sweden—with parties, song and the dismantling of the yule tree (which traditionally is thrown out the window - Julgransplundring).
Named for Knut (or Canute) IV, also Knut the Holy, former king and patron saint of Denmark.
Although St. Knut's feast day is January 19th, Sweden and Finland have conflated observances of Knut IV with that of his nephew and saint Knut Lavard (feast day is January 7th).