January 1 - The Solemnity of Mary, Mother of God
Vigil Mass at 4:00pm on December 31
Mass at 10:00am

May 13 - The Solemnity of the Ascension
Mass at 12:15pm and 7:00pm

August 15 - The Solemnity of the
Assumption of the Blessed Virgin Mary
TBD

November 1 - The Solemnity of All Saints
Mass at 12:15pm and 7:00 pm

December 8 - The Solemnity of the
Immaculate Conception of Mary
Mass at 12:15pm and 7:00 pm

December 25 - The Solemnity of the
Nativity of Our Lord Jesus Christ
Mass at 4 pm on Christmas Eve
Mass at 10am on Christmas Morning

For more information about holy days and the Church calendar, check out this site