The number of Days of Obligation vary from year to year, because the precept to attend Mass is lifted (abrogated) if any of the following days:
falls on a Saturday or on a Monday. The faithful, however, are encouraged to attend Mass on those days. This was decided by the National Conference of Catholic Bishops of the United States of America on December 13, 1991 (Canon 1246) and is effective as of January 1, 1993.
| 2020 | |||
|---|---|---|---|
| January 1, 2020 | Wednesday | Solemnity of Mary, the Holy Mother of God | Holy Day of Obligation |
| February 26, 2020 | Wednesday | Ash Wednesday | Not a Holy Day of Obligation |
| May 24, 2020 | Thursday | Solemnity of the Ascension of the Lord | Holy Day of Obligation |
| August 15, 2020 | Saturday | Solemnity of the Assumption of the Blessed Virgin Mary | Not Holy Day of Obligation |
| November 1, 2020 | Sunday | Solemnity of All Saints | Holy Day of Obligation |
| December 8, 2020 | Tuesday | Solemnity of the Immaculate Conception | Holy Day of Obligation |
| December 25, 2020 | Friday | Solemnity of the Nativity of the Lord | Holy Day of Obligation |