In addition to Sunday, the days to be observed as holy days are:

• January 1, the solemnity of Mary, Mother of God;
• Thursday of the Sixth Week of Easter, the solemnity of the Ascension;
• August 15, the solemnity of the Assumption of the Blessed Virgin Mary;
• November 1, the solemnity of All Saints;
• December 8, the solemnity of the Immaculate Conception;
• December 25, the 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.