"On Sundays and other holy days of obligation, the faithful are to refrain from engaging in work or activities that hinder the worship owed to God, the joy proper to the Lord's Day,
the performance of the works of mercy, and the appropriate relaxation of mind and body. 
Family needs or important social service can legitimately excuse from the obligation
of Sunday rest. The faithful should see to it that legitimate excuses do not lead to
habits prejudicial to religion, family life, and health."
Catechism of the Catholic Church 2185

Wednesday, January 1         Solemnity of Mary, Mother of God
Thursday, May 25                  Solemnity of the Ascension of Jesus
Tuesday, August 15              Solemnity of the Assumption of the Blessed Virgin Mary
Wednesday, November 1     Solemnity of All Saints
Friday, December 8               Solemnity of the Immaculate Conception
Monday, December 25          Solemnity of the Nativity of our Lord Jesus Christ

Monday, January 1               Solemnity of Mary, Mother of God
Thursday, May 10                 Solemnity of the Ascension of Jesus
Thursday, August 15            Solemnity of the Assumption of the Blessed Virgin Mary
Thursday, November 1         Solemnity of All Saints
Saturday, December 8          Solemnity of the Immaculate Conception
Tuesday, December 25         Solemnity of the Nativity of our Lord Jesus Christ