January 6th, Perchten Day

Pärchtentag - End of the Twelve Days of Christmas
January 6th is Frigga's (Frau Holle's) Perchten Day; it is the 13th day and marks the end of the Rauhnächte (Twelve Days of Christmas).
On Perchten Day, in some regions there are Perchten runs, where “creepy masks” are worn to drive the last evil spirits back into their dark realm.
The 12 nights of Yule are a time for reflection, a conclusion to the past and a preview of the time of new beginnings, the time of returning light.