: Participation in the celebration of the Eucharist is mandatory .
A "Holy Day of Obligation" is a feast day on which Catholics are required to attend Mass and rest from unnecessary work, just as they do on Sundays . While every Sunday is a holy day of obligation, there are specific feast days throughout the year that carry this same requirement . Core Requirements holy day of obligation
: The faithful should abstain from "servile work" or activities that hinder worship and suitable relaxation . Holy Days of Obligation for 2026 (United States) : Participation in the celebration of the Eucharist
In the U.S., the obligation is often removed if certain feasts fall on a Saturday or Monday . For 2026, the specific dates are: Catholic 101: Holy Days of Obligation - The Jesuit Post Core Requirements : The faithful should abstain from