Holy days of obligation are specific days on which Catholics are required to attend Mass. In 2025, there are ten holy days of obligation in the United States: New Year’s Day (January 1), Epiphany (January 6), Ascension Thursday (May 15), Pentecost Sunday (May 25), Corpus Christi (June 19), the Assumption of Mary (August 15), All Saints Day (November 1), Christmas (December 25), and the Immaculate Conception (December 8).
Holy days of obligation are important for Catholics because they provide an opportunity to worship God and to reflect on the mysteries of our faith. They are also a time to come together as a community and to celebrate our shared beliefs. The Church encourages Catholics to attend Mass on holy days of obligation, and to make use of these special days to grow in their faith.