Days on which Catholics are obligated to attend Mass:

Holy Days 2021

• Solemnity of Mary, Mother of God - January 1
• Ascension of Jesus - May 13
• Assumption of the Blessed Virgin Mary - August 15 
• All Saints Day - November 1
• Immaculate Conception of the Blessed Virgin Mary - December 8
• Christmas – Nativity of the Lord - December 25