Holy Days Of Obligation 2024 Usccb. January 1, the solemnity of mary, mother of god. Each year the secretariat of divine worship of the united states conference of catholic bishops publishes the liturgical calendar for the dioceses of the united states of america.this calendar is primarily used by authors of ordines and other liturgical aids published to foster the celebration of the liturgy in our country, but may also be used by.

All the days of obligation observed in the united states are listed below. November 1 | all saints’ day.