Due to Christmas falling on a Monday this year, there are two Mass obligations for the weekend of December 24th. One Mass cannot fulfill both obligations at the same time!
Please see Mass times below:
1.) Any Mass on the 23rd or 24th can fulfill the
Sunday obligation for the 4th Sunday of Advent.
2.) Any Mass after 4:00 pm on the 24th or any Mass on the 25th can fulfill the Christmas obligation.