On Saturday, December 8th, we celebrate the Solemnity of the Immaculate Conception of the Blessed Virgin Mary, a Holy Day of Obligation.  Masses fulfilling the Immaculate Conception obligation will be celebrated at 8:30 a.m. and 12:10 p.m.
 
The 5:00 p.m. Sunday Vigil Mass does not fulfill the Immaculate Conception obligation, and so the faithful are advised to attend the Saturday 5:00 p.m. Vigil or one of the Sunday Masses to fulfill their Sunday obligation as well.