https://www.catholicculture.org/culture/liturgicalyear/calendar/day.cfm?date=2013-01-01
Octave of Christmas and Solemnity of Mary, Mother of God (Holy Day of Obligation USA) - January 01,...
Today the Church celebrates the Solemnity of Mary, Mother of God, our Lady's greatest title. This feast is the octave of Christmas. In the modern Roman...
octave of christmas