Christmas Mass Schedule – Catholics are to attend Mass twice.

The Fourth Sunday of Advent this year falls on the same Sunday as Christmas Eve. Two obligations means two Masses. Catholics are to attend Mass twice for these two occasions—once for the 4th Sunday of Advent (either on the evening of Saturday, December 23 or during any Mass on December 24), and once for Christmas (either on the evening of December 24 or during the day on December 25).