Holy Days of Obligation 2026 and 2027: The U.S. List and Rules

The six holy days of obligation in the United States

The Catholic Church in the United States, outside Hawaii, observes six holy days of obligation each year, in addition to every Sunday — which the Church calls the “primordial holy day of obligation” (Code of Canon Law, canon 1246 §1). On each of these days the faithful are called to participate in Mass. The six U.S. holy days are:

• January 1 — Mary, the Holy Mother of God
• The Ascension of the Lord — the Thursday of the Sixth Week of Easter (moved to the following Sunday in most U.S. provinces)
• August 15 — the Assumption of the Blessed Virgin Mary
• November 1 — All Saints
• December 8 — the Immaculate Conception, patronal feast of the United States
• December 25 — the Nativity of the Lord (Christmas)

The universal law of the Church (canon 1246 §1) actually names more feasts than this — including the Epiphany, the Body and Blood of Christ, Saint Joseph, and Saints Peter and Paul — but a conference of bishops may, with the approval of the Holy See, suppress some of them or transfer them to a Sunday (canon 1246 §2). In the United States the Epiphany and the Body and Blood of Christ are kept on a Sunday; Saint Joseph and Saints Peter and Paul are not — for those two the obligation has been suppressed rather than transferred, and they are still celebrated as solemnities on March 19 and June 29. That is why the U.S. list settles at six.

Why Catholics are obliged to attend Mass — and to rest

The obligation is rooted in the Church’s law and her oldest practice. Canon 1247 states that “on Sundays and other holy days of obligation, the faithful are obliged to participate in the Mass.” The Catechism places this first among the precepts of the Church: “You shall attend Mass on Sundays and holy days of obligation and rest from servile labor” (CCC 2042).

This is far more than rule-keeping. The Sunday Eucharist is “the foundation and confirmation of all Christian practice” (CCC 2181). In gathering for Mass, Catholics keep holy the day the Lord has made, receive Christ himself, and give public witness to the faith they share (CCC 2182).

The precept also has a second half that is easy to forget: rest. On these days the faithful are “to refrain from engaging in work or activities that hinder the worship owed to God, the joy proper to the Lord’s Day, the performance of the works of mercy, and the appropriate relaxation of mind and body” (CCC 2185; see canon 1247). The day is meant for God, for family, and for genuine rest.

When a holy day is transferred or the obligation is lifted

Two features of the U.S. calendar surprise many Catholics, and both come from a decree of the U.S. bishops issued December 13, 1991 (effective January 1, 1993) and confirmed by the Holy See.

The Saturday-or-Monday rule. The decree provides: “Whenever January 1, the solemnity of Mary, Mother of God, or August 15, the solemnity of the Assumption, or November 1, the solemnity of All Saints, falls on a Saturday or on a Monday, the precept to attend Mass is abrogated.” In plain terms, in those years and for those three feasts only, the duty to attend Mass is lifted. The feast is still celebrated at Mass, and going is a beautiful thing to do — but staying home on that day is not a sin. If that distinction still weighs on your conscience, our note on scrupulosity may help.

The Ascension. Each ecclesiastical province decides whether to keep the Ascension on its traditional Thursday or transfer it to the Seventh Sunday of Easter. In both 2026 and 2027 the bishops’ calendar names the same five provinces that keep the Thursday — Boston, Hartford, New York, Omaha and Philadelphia — and states that every other U.S. province has transferred the solemnity to the following Sunday. Christmas and the Immaculate Conception are never lifted in this way. When in doubt, check your own diocese’s calendar.

One further case. When December 8 falls on a Sunday of Advent the solemnity itself is transferred, because the Sundays of Advent outrank solemnities on the General Roman Calendar; and the Holy See’s Note of January 23, 2025 (Prot. n. 51/25, no. 7) states that in such an occasional transfer “the obligation to attend Mass is not transferred to the day ad quem.” The next time December 8 falls on a Sunday is 2030.

Is missing Mass a mortal sin?

The Catechism is direct: “Those who deliberately fail in this obligation commit a grave sin” (CCC 2181). Missing Mass on a Sunday or holy day of obligation, without a serious reason, is grave matter.

But grave matter alone is not the whole story, and here charity and precision both matter. For a sin to be mortal, three conditions must be present together: grave matter, full knowledge, and deliberate consent (CCC 1857). The Catechism itself qualifies the obligation: the faithful are bound “unless excused for a serious reason (for example, illness, the care of infants) or dispensed by their own pastor” (CCC 2181). Someone genuinely sick, snowed in, caring for a helpless dependent, or with no way to reach a church has not sinned by missing Mass.

If you have deliberately missed Mass, the remedy is simple and full of mercy: the Sacrament of Confession, where the sin is forgiven and grace restored. A brief examination of conscience beforehand helps you name honestly what happened. God’s mercy is always greater than any lapse.

Who is excused, and how the obligation is satisfied

How the obligation is satisfied. You need not attend on the calendar day itself. The precept “is satisfied by assistance at a Mass which is celebrated anywhere in a Catholic rite either on the holy day or on the evening of the preceding day” (CCC 2180; canon 1248 §1). This is why a Saturday-evening vigil Mass fulfills the Sunday obligation, and an evening Mass the day before a holy day fulfills that day’s obligation. A Mass in any Catholic rite counts — Roman, Byzantine, or another.

Who is excused. The Church names serious causes that excuse a person: illness, the care of infants or the homebound, and similar grave reasons (CCC 2181). A pastor can also dispense an individual or commute the obligation. And if participation in Mass becomes impossible “because of the absence of a sacred minister or for another grave cause,” the faithful are urged to keep the day in a Liturgy of the Word or in personal, family, or group prayer (canon 1248 §2; CCC 2183). The Church asks earnest effort, not the impossible.

Holy days of obligation in 2026

Because the Saturday-or-Monday rule and the Ascension transfer both depend on the calendar, the practical list shifts year to year. The table below is read row by row off the U.S. bishops’ own Liturgical Calendar for the Dioceses of the United States of America for 2026 — including the calendar’s own note on the days where the obligation is unusual. And, of course, every Sunday.

Hawaii is different. By a decree of the Bishop of Honolulu dated March 23, 1992, implementing an indult of May 26, 1990, Christmas and the Immaculate Conception are the only two holy days of obligation in the State of Hawaii. That note appears in both the 2026 and 2027 USCCB calendars.

Holy days of obligation in 2027

The bishops’ 2027 calendar is published, so these are not estimates either. Two of the shifting days move the other way next year: the Assumption lands on a Sunday, and All Saints lands on a Monday, which lifts its obligation.

Hawaii is different. By a decree of the Bishop of Honolulu dated March 23, 1992, implementing an indult of May 26, 1990, Christmas and the Immaculate Conception are the only two holy days of obligation in the State of Hawaii. That note appears in both the 2026 and 2027 USCCB calendars.

To keep these dates in front of you and never be caught off guard, the Sanctum app marks each holy day on your calendar and tells you whether Mass is due that day. If your diocese is in one of the five Thursday provinces, confirm the Ascension date on your own diocesan calendar — that is the one detail a national list cannot settle for you.