The following is a list of the dates of the Holy Days of Obligation in the United States for 2012, as well as the dates of moveable feasts (holy days whose dates change from year to year).
- Mary, Mother of God (Sunday, January 1, 2012)
Holy Day of Obligation
- Ash Wednesday (Wednesday, February 22, 2012)
- Palm Sunday (Sunday, April 1, 2012)
- Holy Thursday (Thursday, April 5, 2012)
- Good Friday (Friday, April 6, 2012)
- Holy Saturday (Saturday, April 7, 2012)
- Easter Sunday (Sunday, April 8, 2012)
- Divine Mercy Sunday (Sunday, April 15, 2012)
- Ascension (Thursday, May 17, 2012)
Holy Day of Obligation (transferred to Sunday, May 20, 2012 in most dioceses of the United States)
- Pentecost Sunday (Sunday, May 27, 2012)
- Trinity Sunday (Sunday, June 3, 2012)
- Corpus Christi (Thursday, June 7, 2012; transferred to Sunday, June 10, 2012)
- Assumption of Mary (Wednesday, August 15, 2012)
Holy Day of Obligation
- All Saints Day (Thursday, November 1, 2012)
Holy Day of Obligation
- First Sunday of Advent (Sunday, December 2, 2012)
Complete Advent schedule
- Immaculate Conception (Saturday, December 8, 2012)
Holy Day of Obligation
- Christmas (Tuesday, December 25, 2012)
Holy Day of Obligation
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