- Dec. 21 December 21, O Oriens (O Dayspring); Opt. Mem. of St. Peter Canisius, Priest & Doctor; Ember Saturday, Opt. Mem.
- Dec. 20 December 20, O Clavis David (O Key of David); Ember Friday, Weekday
- Dec. 19 December 19, O Root of Jesse, Weekday
- Dec. 18 December 18, O Lord and Ruler; Ember Wednesday, Weekday
- Dec. 17 December 17, O Wisdom, Weekday
- Dec. 16 Monday of the Third Week of Advent, Weekday
- Dec. 15 Third Sunday of Advent, Sunday
- Dec. 14 Memorial of St. John of the Cross, Priest and Doctor, Memorial
- Dec. 13 Memorial of St. Lucy, Virgin and Martyr, Memorial
- Dec. 12 Feast of Our Lady of Guadalupe (USA), Feast
