- Fri1Friday of the thirty-fourth week of Ordinary TimeWeekday
- Sat2Saturday of the thirty-fourth week of Ordinary TimeWeekday
- Sun3First Sunday of AdventSunday
- Mon4Monday of the first week of AdventWeekdaySaint John Damascene, Priest and Doctor of the Church (Optional Memorial)
- Tue5Tuesday of the first week of AdventWeekday
- Wed6Wednesday of the first week of AdventWeekdaySaint Nicholas, Bishop (Optional Memorial)
- Thu7Saint Ambrose, Bishop and Doctor of the ChurchMemorial
- Fri8The Immaculate Conception of the Blessed Virgin Mary, Patroness of the USASolemnity
- Sat9Saturday of the first week of AdventWeekdaySaint Juan Diego Cuauhtlatoatzin (Optional Memorial)
- Sun10Second Sunday of AdventSunday
- Mon11Monday of the second week of AdventWeekdaySaint Damasus I, Pope (Optional Memorial)
- Tue12Our Lady of Guadalupe, Patroness of the AmericasFeast
- Wed13Saint Lucy, Virgin and MartyrMemorial
- Thu14Saint John of the Cross, Priest and Doctor of the ChurchMemorial
- Fri15Friday of the second week of AdventWeekday
- Sat16Saturday of the second week of AdventWeekday
- Sun17Third Sunday of AdventSunday
- Mon18December 18Privileged Weekday
- Tue19December 19Privileged Weekday
- Wed20December 20Privileged Weekday
- Thu21December 21Privileged WeekdaySaint Peter Canisius, Priest and Doctor of the Church (Optional Memorial)
- Fri22December 22Privileged Weekday
- Sat23December 23Privileged WeekdaySaint John of Kanty, Priest (Optional Memorial)
- Sun24Fourth Sunday of AdventSunday
- Mon25The Nativity of the Lord (Christmas)Solemnity
- Tue26Saint Stephen, the First MartyrFeast
- Wed27Saint John, Apostle and EvangelistFeast
- Thu28The Holy Innocents, MartyrsFeast
- Fri29Fifth Day within the Octave of the Nativity of the LordPrivileged WeekdaySaint Thomas Becket, Bishop and Martyr (Optional Memorial)
- Sat30Sixth Day within the Octave of the Nativity of the LordPrivileged Weekday
- Sun31The Holy Family of Jesus, Mary and JosephFeast