Holy Days of Obligation
January 1 - Solemnity of Mary, Mother of God
Thursday of the Sixth Week of Easter - Solemnity of the Ascension
August 15 - Solemnity of the Assumption of the Blessed Virgin Mary
November 1 - Solemnity of All Saints
December 8 - Solemnity of the Immaculate Conception
December 25 - Solemnity of the Nativity of Our Lord Jesus Christ
Whenever January 1, the Solemnity of Mary, Mother of God, or August 15, the Solemnity of the Assumption, or November 1, the Solemnity of All Saints, falls on a Saturday or on a Monday, the precept to attend Mass is abrogated.