Holy Days of Obligation are six days a year on which all Catholics are required to attend Mass. These days are the Solemnity of Mary, the Ascension of the Lord, the Solemnity of All Saints, the Solemnity of the Assumption of Mary, the Solemnity of the Immaculate Conception and the solemnity of the Nativity of Our Lord Jesus Christ (Christmas). If the holy day falls on a Saturday or a Monday, the obligation to attend Mass on that day is removed (except on Christmas), and the holy day is celebrated on Sunday.
Holy Days for 2024
In addition to Sundays, the following holy days are obligatory in 2024:
Sunday, May 12 – The Ascension of the Lord (permanently transferred to the 7th Sunday of Easter in Florida)
Thursday, August 15 - The Assumption of the Blessed Virgin Mary
Friday, November 1 – All Saints' Day
Wednesday, December 25 – The Nativity of Our Lord Jesus Christ (Christmas)