A.D. 2100 December 12–18
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday, December 12
- The Third Sunday in Advent (Gaudete Sunday)
Monday, December 13
- The Third Monday of Advent
- Lucy, Martyr at Syracuse, 304
Tuesday, December 14
- The Third Tuesday of Advent
Wednesday, December 15
- The Third Wednesday of Advent
- Ember Day
Thursday, December 16
- The Third Thursday of Advent
- O Sapientia
Friday, December 17
- The Third Friday of Advent
- O Adonai
- Ember Day
Saturday, December 18
- The Third Saturday of Advent
- O Radix Jesse
- Ember Day