A.D. 2124 December 17–23
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday, December 17
- The Third Sunday in Advent (Gaudete Sunday)
- O Adonai
Monday, December 18
- The Third Monday of Advent
- O Radix Jesse
Tuesday, December 19
- The Third Tuesday of Advent
- O Clavis David
Wednesday, December 20
- The Third Wednesday of Advent
- Eve of Saint Thomas
- O Oriens
- Ember Day
Thursday, December 21
- Saint Thomas, Apostle and Martyr
- The Third Thursday of Advent
- O Rex Gentium
Friday, December 22
- The Third Friday of Advent
- O Emmanuel
- Ember Day
Saturday, December 23
- The Third Saturday of Advent
- Christmas Eve
- O Virgo Virginum
- Ember Day