- Dec. 29 Fifth Day within the Octave of the Nativity of the Lord (Christmas); Opt Mem of St. Thomas Becket, Bishop and Martyr, Opt. Mem.
- Dec. 28 Feast of the Holy Family, Feast
- Dec. 27 Feast of Saint John, Apostle and Evangelist, Feast
- Dec. 26 Feast of St. Stephen, First Martyr, Feast
- Dec. 25 Solemnity of the Nativity of the Lord (Christmas), Solemnity
- Dec. 24 December 24, Christmas Eve, Weekday
- Dec. 23 December 23, O Emmanuel; Opt Mem of St. John of Kanty, Priest, Opt. Mem.
- Dec. 22 December 22, O King of the Nations (O Rex Gentium), Weekday
- Dec. 21 Fourth Sunday of Advent; O Dayspring (O Oriens), Sunday
- Dec. 20 December 20, O Key of David (O Clavis David); Ember Saturday, Weekday
