A complete list of Holy Days of Obligation and their observances for 2024 are:

Sunday, January 1, 2024
Solemnity of the Mary, the Holy Mother of God

Thursday, May 9, 2024
Solemnity of the Ascension of the Lord

Thursday, August 15, 2024
Solemnity of the Assumption of the Blessed Virgin Mary

Friday, November 1, 2024
Solemnity of All Saints

Monday, December 9, 2024
Solemnity of the Immaculate Conception of the Blessed Virgin Mary
Patronal Feast of the United States of America

Wednesday, December 25, 2024
Solemnity of the Nativity of the Lord (Christmas)
Please note:  In the Archdiocese of Philadelphia, the Vigil Mass cannot be celebrated before 4:00 PM.