Mass for the Solemnity of the Immaculate Conception

Mass Obligation: Immaculate Conception of the Blessed Virgin Mary

In 2018, the Patronal Feast of the United States of America – the Immaculate Conception of the Blessed Virgin Mary – and the Second Sunday of Advent occur on back-to-back days, and both days remain obligatory this year. The faithful must attend Mass at 4 p.m. or after on Friday, December 7 or at any time on Saturday, December 8 to fulfill their obligation for the Immaculate Conception. The faithful must attend another Mass at 4 p.m. or after on Saturday, December 8 or at any time on Sunday, December 9 for the Second Sunday of Advent. Attending only one Mass Saturday evening, December 8 does not satisfy both obligations.