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The EucharistEssentials

Does a Saturday morning Mass fulfill the Sunday obligation?

The Eucharist

The short answer

No. Canon law says the obligation is satisfied by Mass on the day itself or in the evening of the preceding day, not on Saturday morning.

A Saturday morning Mass does not fulfill the Sunday obligation. Canon 1248 §1 says that one who attends Mass celebrated anywhere in a Catholic rite, on the feast day itself or in the evening of the preceding day, satisfies the obligation.