- Mon1The Octave Day of the Nativity of the Lord: Solemnity of Mary, the Holy Mother of GodSolemnity
- Tue2Saints Basil the Great and Gregory Nazianzen, Bishops and Doctors of the ChurchMemorial
- Wed3January 3WeekdayThe Most Holy Name of Jesus (Optional Memorial)
- Thu4Saint Elizabeth Ann Seton, ReligiousMemorial
- Fri5Saint John Neumann, BishopMemorial
- Sat6January 6WeekdaySaint André Bessette, Religious (Optional Memorial)
- Sun7The Epiphany of the LordSolemnity
- Mon8The Baptism of the LordSolemnity
- Tue9Tuesday of the first week of Ordinary TimeWeekday
- Wed10Wednesday of the first week of Ordinary TimeWeekday
- Thu11Thursday of the first week of Ordinary TimeWeekday
- Fri12Friday of the first week of Ordinary TimeWeekday
- Sat13Saturday of the first week of Ordinary TimeWeekdaySaint Hilary, Bishop and Doctor of the Church (Optional Memorial)
- Sun14Second Sunday in Ordinary TimeSunday
- Mon15Monday of the second week of Ordinary TimeWeekday
- Tue16Tuesday of the second week of Ordinary TimeWeekday
- Wed17Saint Anthony, AbbotMemorial
- Thu18Thursday of the second week of Ordinary TimeWeekday
- Fri19Friday of the second week of Ordinary TimeWeekday
- Sat20Saturday of the second week of Ordinary TimeWeekdaySaint Fabian, Pope and Martyr (Optional Memorial) · Saint Sebastian, Martyr (Optional Memorial)
- Sun21Third Sunday in Ordinary Time, or Sunday of the Word of GodSunday
- Mon22Monday of the third week of Ordinary TimeWeekday
- Tue23Tuesday of the third week of Ordinary TimeWeekdaySaint Vincent, Deacon and Martyr (Optional Memorial) · Saint Marianne Cope, Virgin (Optional Memorial)
- Wed24Saint Francis de Sales, Bishop and Doctor of the ChurchMemorial
- Thu25The Conversion of Saint Paul the ApostleFeast
- Fri26Saints Timothy and Titus, BishopsMemorial
- Sat27Saturday of the third week of Ordinary TimeWeekdaySaint Angela Merici, Virgin (Optional Memorial)
- Sun28Fourth Sunday in Ordinary TimeSunday
- Mon29Monday of the fourth week of Ordinary TimeWeekday
- Tue30Tuesday of the fourth week of Ordinary TimeWeekday
- Wed31Saint John Bosco, PriestMemorial