Monday, December 9 is the Immaculate Conception of the Blessed Virgin Mary (a holy day of obligation). Masses are at 6:30 AM, 8:15 AM, 12:00 PM, and 6:00 PM.

This holy day is normally celebrated on December 8, but this year it is celebrated on December 9 because December 8 is a Sunday and a Solemnity during Advent cannot be changed for another Solemnity.