December 2021 | |
| 3rd | St Francis Xavier, Priest |
| 4th | St John Damascene, Priest, Doctor of the Church |
| 5th | 2nd Sunday of Advent, Year C |
| 6th | St Nicholas, Bishop |
| 7th | St Ambrose, Bishop, Doctor of the Church |
| 8th | Solemnity of the Immaculate Conception of the Blessed Virgin Mary |
| 9th | St Juan Diego Cuahtlatoatzin |
| 10th | Our Lady of Loreto St John Roberts, Priest, Martyr |
| 11th | St Damasus I, Pope |
| 12th | 3rd Sunday of Advent, Year C |
| 13th | St Lucy, Virgin, Martyr |
| 14th | St John of the Cross, Priest, Doctor of the Church |
| 19th | 4th Sunday of Advent, Year C |
| 21st | St Peter Canisius, Priest, Doctor of the Church |
| 23rd | St John of Kanty, Priest |
| 25th | Solemnity of the Nativity of the Lord |
| 26th | Feast of the Holy Family of Jesus, Mary and Joseph |
| 27th | Feast of St John, Apostle, Evangelist |
| 28th | Feast of the Holy Innocents, Martyrs |
| 29th | St Thomas à Becket, Bishop, Martyr |
| 31st | St Sylvester I, Pope |