Dec. 24, Christmas Eve Mass 5 pm/ Dec. 25, Christmas Day Mass 10 am / Jan. 1 Solemnity of Mary, Mother of God (not a Holy Day of Obligation) Mass 7:30 am (Dec. 25, Saturday evening Mass at 5 pm Saturday evening Mass does not count as a Christmas Mass and does not satisfy the obligation for the holy day. The 5 pm mass on Saturday is considered the vigil mass for the weekend of December 26. )