Ethan Walker
Holy days for Catholics, also known as Holy Days of Obligation, are the most important days in the liturgical year when the faithful are required to participate in Mass. These days celebrate key events in salvation history and honour the central mysteries of the Catholic faith. The 1917 Code of Canon Law set forth the modern, full list of Holy Days, but there has been a long history of observing special days, dating back centuries. Sundays are considered the foremost holy day of obligation, with Catholics being obligated to attend Mass on this day. In addition to Sundays, there are several other holy days of obligation for Catholics, which vary depending on the country and diocese.
| Characteristics | Values |
|---|---|
| Number of Holy Days of Obligation | 9 |
| Number of Holy Days of Obligation outside of Sundays | 6 |
| Holy Days of Obligation in the US in 2025 | Mary, Mother of God (Jan 1); The Ascension of Jesus Christ (May 29 or transferred); The Assumption of Mary (Aug 15); The Immaculate Conception (Dec 8); Christmas Day (Dec 25) |
| Holy Days of Obligation in Ireland | Feast of St. Patrick |
| Holy Days of Obligation in Mexico | Our Lady of Guadalupe |
| Holy Days of Obligation in Hawaii | Immaculate Conception of the Blessed Virgin Mary and Christmas |
| Days Catholics are obligated to attend Mass | Sundays; Easter |
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What You'll Learn
Holy days of obligation
The 1917 Code of Canon Law set forth the modern, full list of Holy Days, but there has been a long history of observing special days, dating back centuries. According to the Code of Canon Law of the Catholic Church, there are nine holy days of obligation other than Sundays, but it also states that local bishops may suppress some of them or transfer them to a Sunday. For example, in the United States, the feast of Epiphany is always celebrated on a Sunday, and the feast of Saint Joseph and the feast of Saints Peter and Paul are not observed as holy days of obligation.
In 2025, there are six holy days of obligation in the United States outside of Sundays. These are: Mary, Mother of God (Jan 1); The Ascension of Jesus Christ (May 29 or transferred); The Assumption of Mary (Aug 15); The Immaculate Conception (Dec 8); Christmas Day (Dec 25); and All Saints Day (Nov 1). All Saints Day is not considered a holy day of obligation in 2025 because it falls on a Saturday. However, while the obligation to attend Mass is lifted, Catholics are still encouraged to attend.
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Feast days
The 1917 Code of Canon Law set forth the modern, full list of Holy Days, but there has been a long history of observing special days, dating back centuries. Sundays are always Holy Days of Obligation, as Sunday is the day Jesus rose from the dead, and therefore signifies a "new creation".
In the United States, there are six Holy Days of Obligation outside of Sundays. These include:
- January 1st: The Solemnity of Mary, Mother of God
- May 29th (Thursday of the Sixth Week of Easter): The Solemnity of the Ascension (this is often transferred to the Seventh Sunday of Easter)
- August 15th: The Solemnity of the Assumption of the Blessed Virgin Mary
- December 8th: The Solemnity of the Immaculate Conception
- December 25th: The Solemnity of the Nativity of Our Lord Jesus Christ (Christmas)
In addition, November 1st is the Solemnity of All Saints, which is a Holy Day of Obligation unless it falls on a Saturday or a Monday, in which case the obligation to attend Mass is lifted. In 2025, this was the case, and so All Saints Day was not a Holy Day of Obligation.
It is important to note that the observance of Holy Days of Obligation can vary by country and diocese. For example, in Ireland, the Feast of St. Patrick is a Holy Day of Obligation, while in Mexico, Our Lady of Guadalupe is recognized as a Holy Day.
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Obligation to attend Mass
The obligation to attend Mass on holy days is a serious matter for Catholics. The Catechism of the Catholic Church states that deliberately missing Mass on a holy day of obligation is a mortal sin. However, it is important to note that this obligation can be dispensed for just causes, such as physical illness or the inability to attend Mass due to caregiving responsibilities. In such cases, Catholics are encouraged to use their prudential judgment and seek guidance from their priests.
According to the Code of Canon Law, there are nine holy days of obligation for Catholics, in addition to Sundays. However, local bishops' conferences may suppress certain holy days or transfer them to Sundays. This means that the number of obligatory holy days can vary between countries and even dioceses. For example, in the United States, there are typically six holy days of obligation outside of Sundays. These include the Solemnity of Mary, Mother of God (January 1), the Solemnity of the Ascension (May 29 or transferred to the Seventh Sunday of Easter in most dioceses), the Solemnity of the Assumption of the Blessed Virgin Mary (August 15), the Solemnity of the Immaculate Conception (December 8), and the Solemnity of the Nativity of Our Lord Jesus Christ (December 25).
The obligation to attend Mass on a particular holy day can also be influenced by the day of the week on which it falls. For instance, if the Solemnity of Mary, the Assumption, or All Saints' Day falls on a Saturday or Monday, the obligation to attend Mass on that day is often lifted, and Catholics are instead encouraged to attend Mass on the nearest Sunday. This is the case for All Saints' Day in 2025, as it falls on November 1.
It is worth noting that some dioceses may have slight variations in how they handle holy days of obligation. For example, in 2022, certain archdioceses in the U.S. observed the Ascension on Thursday as a Holy Day of Obligation, while others transferred it to Sunday. Additionally, in Hawaii, the only observed holy days of obligation, except for Sundays, are the Immaculate Conception and Christmas.
While the obligation to attend Mass on holy days is an important aspect of Catholic faith, it is always subject to the individual's ability and circumstances. Catholics are encouraged to stay informed about the specific obligations in their dioceses and to consult with their local parishes or dioceses for any clarifications.
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Cancelling obligation
According to the Code of Canon Law, there are nine holy days of obligation for Catholics, excluding Sundays. However, the local conference of bishops has the authority to suppress certain holy days or transfer them to Sundays. This means that the number of holy days of obligation can vary between countries and dioceses. For example, in the United States, bishops have suppressed the Feast of Saint Joseph and the Feast of Saints Peter and Paul as holy days of obligation. Similarly, in Hawaii, the only observed holy days of obligation, apart from Sundays, are the Immaculate Conception of the Blessed Virgin Mary and Christmas.
The obligation to attend Mass on a holy day can also be lifted in certain circumstances. If a holy day falls on a Saturday or Monday, such as the Solemnity of Mary, the Assumption of the Blessed Virgin Mary, or the Solemnity of All Saints, the obligation is often cancelled, and Catholics can attend Mass on Sunday instead. This flexibility allows Catholics to fulfil their religious duties while accommodating practical considerations.
In addition to these set holy days, there are also movable feasts, such as Easter, which is always celebrated on a Sunday and is, therefore, an obligatory day for Catholics. The Ascension of Jesus is another example of a movable feast, which individual bishops can transfer to the Seventh Sunday of Easter. This flexibility ensures that holy days can be observed with ease by the Catholic community.
It is important to note that even if a holy day's obligation is cancelled, Catholics are still encouraged to attend Mass if possible. Holy days provide an opportunity for spiritual growth and connection with God, and Catholics are advised to use their prudential judgment and seek guidance from their priests when deciding whether to attend Mass on a particular holy day.
In conclusion, while there are set holy days of obligation for Catholics, the Catholic Church recognises that circumstances may prevent attendance, and so it allows for flexibility in certain cases. This adaptability ensures that the focus remains on faith and worship rather than strict adherence to dates.
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Diocesan differences
For example, in the United States, there are generally six holy days of obligation outside of Sundays. However, individual bishops have the authority to transfer a holy day to a Sunday, which is often done to accommodate the faithful's schedules. In 2025, the Ascension of Jesus was transferred to the Seventh Sunday of Easter in most US dioceses. Similarly, the Solemnity of All Saints, which falls on November 1, is not a Holy Day of Obligation in 2025 in the US as it falls on a Saturday, and the obligation to attend Mass is lifted.
The Code of Canon Law allows for some flexibility in how holy days are observed, stating that "the local conference of bishops may suppress some [holy days] or transfer them to a Sunday." This flexibility takes into account the specific needs and circumstances of each diocese or region. It is always advisable to check with your local diocese or parish to understand how a particular holy day is observed in your area.
While there may be diocesan differences in the observance of holy days, the importance of these days in the liturgical calendar remains consistent across the Catholic Church. Holy days of obligation are considered the most important days in the liturgical year, commemorating key events in salvation history and honouring the central mysteries of the Catholic faith.
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Frequently asked questions
Holy days of obligation are the most important days in the Catholic liturgical calendar, when the faithful are required to participate in Mass. These include:
- Sundays
- The Solemnity of Mary, Mother of God (January 1)
- The Solemnity of the Ascension (Thursday of the Sixth Week of Easter)
- The Solemnity of the Assumption of the Blessed Virgin Mary (August 15)
- The Solemnity of the Immaculate Conception (December 8)
- The Solemnity of the Nativity of Our Lord Jesus Christ (December 25)
Yes, there are several other important liturgical observances and holidays that Catholics celebrate, such as All Saints' Day (November 1), Ash Wednesday, and the Feast of St. Patrick (in Ireland).
Catholics are generally required to attend Mass on holy days of obligation, but there are exceptions. For example, if a holy day falls on a Saturday or Monday, the obligation is often lifted, and the feast is celebrated on the nearest Sunday instead.
Catholics who deliberately miss Mass on a holy day of obligation without a valid reason (such as illness or the care of infants) are considered to have committed a mortal sin. However, the final decision is left to the prudential judgment of the individual and guidance from their priests.
Yes, the observance of holy days can vary by country and diocese. For example, in the United States, there are typically six holy days of obligation outside of Sundays, while in Hawaii, the only observed holy days of obligation are the Immaculate Conception and Christmas.
