December 21st is Yule

Yule or Yuletide ("Yule time") is a festival observed by the historical Germanic peoples, later undergoing Christianised reformulation resulting in the now better-known Christmastide. The earliest references to Yule are by way of indigenous Germanic month names Ærra Jéola (Before Yule) or Jiuli and Æftera Jéola (After Yule). Scholars have connected the celebration to the Wild Hunt, the god Odin and the pagan Anglo-Saxon Modranicht.

Terms with an etymological equivalent to Yule are used in the Nordic countries for Christmas with its religious rites, but also for the holidays of this season. Yule is also used to a lesser extent in English-speaking countries to refer to Christmas. Customs such as the Yule log, Yule goat, Yule boar, Yule singing, and others stem from Yule. A number of Neopagans have introduced their own rites.