A.D. 1957 December 15–21
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday, December 15
- The Third Sunday in Advent (Gaudete Sunday)
Monday, December 16
- The Third Monday of Advent
- O Sapientia
Tuesday, December 17
- The Third Tuesday of Advent
- O Adonai
Wednesday, December 18
- The Third Wednesday of Advent
- O Radix Jesse
- Ember Day
Thursday, December 19
- The Third Thursday of Advent
- O Clavis David
Friday, December 20
- The Third Friday of Advent
- Eve of Saint Thomas
- O Oriens
- Ember Day
Saturday, December 21
- Saint Thomas, Apostle and Martyr
- The Third Saturday of Advent
- O Rex Gentium
- Ember Day