Immaculate Conception Holyday
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- Solemnity of the Immaculate Conception – Monday December 8, 2025
Monday, December 8, 2025 is the Solemnity of the Immaculate Conception of the Blessed Virgin Mary. As the Patronal Feast of the United States, December 8 is always a Holy Day of Obligation. However, because Sundays in Advent take precedence over Solemnities, all Masses celebrated on Sunday, December 7, 2025, are to use the Mass formula and readings of the Second Sunday of Advent. Masses celebrated on Monday, December 8, are to be for the obligatory celebration of the Solemnity of the Immaculate Conception.
Although anticipated/vigil Masses for the Solemnity of the Immaculate Conception are not permitted this year, it should be noted that the Code of Canon Law 1248 §1 states: “A person who assists at a Mass celebrated anywhere in a Catholic rite either on the feast day itself or in the evening of the preceding day satisfies the obligation of participating in the Mass.” Therefore, participation in a Sunday evening Mass on December 7 satisfies the obligation attached to either the 2nd Sunday of Advent or the Immaculate Conception, but both obligations cannot be satisfied with a single Mass.
- Solemnity of the Immaculate Conception – Monday December 8, 2025