Holy days of obligation (also known as feasts of precept) are days when the faithful are obliged to participate at Mass and abstain from unnecessary work or other activities which hinder the suitable relaxation of mind and body. Each Sunday is a holy day of obligation, and six Solemnities are also observed as feasts of precept in the United States.
The days to be observed as holy days of obligation in the Latin Rite dioceses of the United States of America are:
- January 1, the solemnity of Mary, Mother of God
- Thursday of the Sixth Week of Easter, the solemnity of the Ascension
- August 15, the solemnity of the Assumption of the Blessed Virgin Mary
- November 1, the solemnity of All Saints
- December 8, the solemnity of the Immaculate Conception (Transferred to December 9)
- December 25, the solemnity of the Nativity of Our Lord Jesus Christ
Learn more about the Liturgical Year and Holy Days of Obligation in the USCCB website
See the 2024 Calendar of Liturgical Observances for the Diocese of San Diego
The Adoration of the Shepherds
Sebastiano Conca, 1720