December 2025
| Day | Date | Celebration | Rank |
|---|---|---|---|
| Monday | 1 | Weekday of Advent | |
| Tuesday | 2 | Weekday of Advent | |
| Wednesday | 3 | St Francis Xavier, Priest | memorial |
| Thursday | 4 | Weekday of Advent, St John Damascene, Priest, Doctor of the Church |
|
| Friday | 5 | Weekday of Advent | |
| Saturday | 6 | Weekday of Advent, St Nicholas, Bishop | |
| Sunday | 7 | 2nd Sunday of Advent | Week II |
| Monday | 8 | The Immaculate Conception of the Blessed Virgin Mary | solemnity |
| Tuesday | 9 | Weekday of Advent, St Juan Diego Cuahtlatoatzin |
|
| Wednesday | 10 | Weekday of Advent, Our Lady of Loreto, St John Roberts, Priest, Martyr (W) |
|
| Thursday | 11 | Weekday of Advent, St Damasus I, Pope |
|
| Friday | 12 | Weekday of Advent, Our Lady of Guadalupe |
|
| Saturday | 13 | St Lucy, Virgin, Martyr | memorial |
| Sunday | 14 | 3rd Sunday of Advent | Week III |
| Monday | 15 | Weekday of Advent | |
| Tuesday | 16 | Weekday of Advent | |
| Wednesday | 17 | Weekday of Advent | |
| Thursday | 18 | Weekday of Advent | |
| Friday | 19 | Weekday of Advent | |
| Saturday | 20 | Weekday of Advent | |
| Sunday | 21 | 4th Sunday of Advent | Week IV |
| Monday | 22 | Weekday of Advent | |
| Tuesday | 23 | Weekday of Advent, St John of Kanty, Priest |
|
| Wednesday | 24 | Weekday of Advent | |
| Thursday | 25 | The Nativity of the Lord | solemnity |
| Friday | 26 | St Stephen, the first Martyr | feast |
| Saturday | 27 | St John, Apostle, Evangelist | feast |
| Sunday | 28 | The Holy Family of Jesus, Mary and Joseph | feast |
| Monday | 29 | 5th day of Christmas Octave, St Thomas à Becket, Bishop, Martyr |
feast (E) |
| Tuesday | 30 | 6th day of Christmas Octave | |
| Wednesday | 31 | 7th day of Christmas Octave, St Sylvester I, Pope |
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| Day | Date | Celebration | Rank |