The calendar of the Roman Church consists of an arrangement throughout the year of a series of liturgical seasons, commemorations of divine mysteries, and commemorations of saints for purposes of worship.

The key to the calendar is the central celebration of the Easter Triduum, commemorating the supreme saving act of Jesus in his death and resurrection to which all other observances and acts of worship are related.

The purposes of this calendar were outlined in the Constitution on the Sacred Liturgy (Sacrosanctum Concilium, Nos. 102-105) promulgated by the Second Vatican Council.

''Within the cycle of a year … (the Church) unfolds the whole mystery of Christ, not only from his incarnation and birth until his ascension, but also as reflected in the day of Pentecost, and the expectation of a blessed, hoped-for return of the Lord.

''Recalling thus the mysteries of redemption, the Church opens to the faithful the riches of her Lord's powers and merits, so that these are in some way made present at all times, and the faithful are enabled to lay hold of them and become filled with saving grace (No. 102).

''In celebrating this annual cycle of Christ's mysteries, holy Church honors with special love the Blessed Mary, Mother of God'' (No. 103).

''The Church has also included in the annual cycle days devoted to the memory of the martyrs and the other saints (who) sing God's perfect praise in heaven and offer prayers for us. By celebrating the passage of these saints from earth to heaven the Church proclaims the paschal mystery as achieved in the saints who have suffered and been glorified with Christ; she proposes them to the faithful as examples who draw all to the Father through Christ, and through their merits she pleads for God's favors (No. 104).

''In the various seasons of the year and according to her traditional discipline, the Church completes the formation of the faithful by means of pious practices for soul and body, by instruction, prayer, and works of penance and mercy (No. 105).''

The Roman Calendar

Norms for a revised calendar for the Western Church as decreed by the Second Vatican Council were approved by Paul VI in the motu proprio Mysterii Paschalis dated Feb. 14, 1969. The revised calendar was promulgated a month later by a decree of the Congregation for Divine Worship and went into effect Jan. 1, 1970, with provisional modifications. Full implementation of all its parts was delayed in 1970 and 1971, pending the completion of work on related liturgical texts. The U.S. bishops ordered the calendar into effect for 1972.

The Seasons

Advent: The liturgical year begins with the first Sunday of Advent, which introduces a season of four weeks or slightly less duration with the theme of expectation of the coming of Christ. During the first two weeks, the final coming of Christ as Lord and Judge at the end of the world is the focus of attention. From Dec. 17-24, the emphasis shifts to anticipation of the celebration of his Nativity on the solemnity of Christmas.

Advent has four Sundays. Since the 10th century, the first Sunday has marked the beginning of the liturgical year in the Western Church. In the Middle Ages, a kind of pre-Christmas fast was in vogue during the season.

Christmas Season: The Christmas season begins with the vigil of Christmas and lasts until the Sunday after Jan. 6, inclusive.

The period between the end of the Christmas season and the beginning of Lent belongs to the ordinary time of the year. Of variable length, the pre-Lenten phase of this season includes what were formerly called the Sundays after Epiphany and the suppressed Sundays of Septuagesima, Sexagesima and Quinquagesima.

Lent: The penitential season of Lent begins on Ash Wednesday, which occurs between Feb. 4 and Mar. 11, depending on the date of Easter, and lasts until the Mass of the Lord's Supper (Holy Thursday). It has six Sundays. The sixth Sunday marks the beginning of Holy Week and is known as Passion (formerly called Palm) Sunday.
The origin of Lenten observances dates back to the fourth century or earlier.

Easter Triduum: The Easter Triduum begins with evening Mass of the Lord's Supper and ends with Evening Prayer on Easter Sunday.

Easter Season: The Easter season whose theme is resurrection from sin to the life of grace, lasts for 50 days, from Easter to Pentecost. Easter, the first Sunday after the first full moon following the vernal equinox, occurs between Mar. 22 and Apr. 25. The terminal phase of the Easter season, between the solemnities of the Ascension of the Lord and Pentecost, stresses anticipation of the coming and action of the Holy Spirit.

Ordinary Time: The season of Ordinary Time begins on Monday (or Tuesday if the feast of the Baptism of the Lord is celebrated on that Monday) after the Sunday following Jan. 6 and continues until the day before Ash Wednesday, inclusive. It begins again on the Monday after Pentecost and ends on the Saturday before the first Sunday of Advent. It consists of 33 or 34 weeks. The last Sunday is celebrated as the Solemnity of Christ the King. The overall purpose of the season is to elaborate the themes of salvation history.

The various liturgical seasons are characterized in part by the scriptural readings and Mass prayers assigned to each of them. During Advent, for example, the readings are messianic; during the Easter season, from the Acts of the Apostles, chronicling the Resurrection and the original proclamation of Christ by the Apostles, and from the Gospel of John; during Lent, baptismal and penitential passages. Mass prayers reflect the meaning and purpose of the various seasons.

Commemorations of Saints

The commemorations of saints are celebrated concurrently with the liturgical seasons and feasts of our Lord. Their purpose is to illustrate the paschal mysteries as reflected in the lives of saints, to honor them as heroes of holiness, and to appeal for their intercession.

In line with revised regulations, some former feasts were either abolished or relegated to observance in particular places by local option for one of two reasons: (1) lack of sufficient historical evidence for observance of the feasts; or, (2) lack of universal significance.The commemoration of a saint, as a general rule, is observed on the day of death (dies natalis, day of birth to glory with God in heaven). Exceptions to this rule include the feasts of St. John the Baptist, who is honored on the day of his birth; Sts. Basil the Great and Gregory Nazianzen; and the brother saints, Cyril and Methodius, who are commemorated in joint feasts. Application of this general rule in the revised calendar resulted in date changes of some observances.

Sundays and Other Holy Days

Sunday is the original Christian feast day and holy day of obligation because of the unusually significant events of salvation history which took place and are commemorated on the first day of the week, viz., the Resurrection of Christ, the key event of his life and the fundamental fact of Christianity; and the descent of the Holy Spirit upon the Apostles on Pentecost, the birthday of the Church. The transfer of observance of the Lord's Day from the Sabbath to Sunday was made in apostolic times. The Mass and Liturgy of the Hours (Divine Office) of each Sunday reflect the themes and set the tones of the various liturgical seasons.

Holy days of obligation are special occasions on which Catholics who have reached the age of reason are seriously obliged, as on Sundays, to assist at Mass; they are also to refrain from work and involvement with business that impedes participation in divine worship and the enjoyment of appropriate rest and relaxation.
The holy days of obligation observed in the U.S. are: Christmas, the Nativity of Jesus, Dec. 25; Solemnity of Mary the Mother of God, Jan. 1; Ascension of the Lord; Assumption of Blessed Mary the Virgin, Aug. 15; All Saints' Day, Nov. 1; Immaculate Conception of Blessed Mary the Virgin, Dec. 8.

The precept to attend Mass is abrogated in the U.S. whenever the Solemnity of Mary, the Assumption, or All Saints falls on a Saturday or Monday (1991 decree of U.S. bishops; approved by Holy See July 4, 1992, and effective Jan. 1, 1993).

In addition to these, there are four other holy days of obligation prescribed in the general law of the Church which are not so observed in the U.S.: Epiphany, Jan. 6; St. Joseph, Mar. 19; Corpus Christi; Sts. Peter and Paul, June 29. The solemnities of Epiphany and Corpus Christi are transferred to a Sunday in countries where they are not observed as holy days of obligation.

Solemnities, Feasts, Memorials

Categories of observances according to dignity and manner of observance are: solemnities, principal days in the calendar (observance begins with Evening Prayer I of the preceding day; some have their own vigil Mass); feasts (celebrated within the limits of the natural day); obligatory memorials (celebrated throughout the Church); optional memorials (observable by choice).

Fixed observances are those that are regularly celebrated on the same calendar day each year.

Movable observances are those that are not observed on the same calendar day each year. Examples of these are Easter (the first Sunday after the first full moon following the vernal equinox), Ascension (40 days after Easter), Pentecost (50 days after Easter), Trinity Sunday (first after Pentecost), Christ the King (last Sunday of the liturgical year).

Weekdays, Days of Prayer

Weekdays are those on which no proper feast or vigil is celebrated in the Mass or Liturgy of the Hours (Divine Office). On such days, the Mass may be that of the preceding Sunday, which expresses the liturgical spirit of the season, an optional memorial, a votive Mass, or a Mass for the dead. Weekdays of Advent and Lent are in a special category of their own.

Days of Prayer: Dioceses, at times to be designated by local bishops, should observe 'days or periods of prayer for the fruits of the earth, prayer for human rights and equality, prayer for world justice and peace, and penitential observance outside of Lent.' So stated the Instruction on Particular Calendars (No. 331) issued by the Congregation for the Sacraments and Divine Worship June 24, 1970.

These days are contemporary equivalents of what were formerly called ember and rogation days.

Ember days originated at Rome about the fifth century, probably as Christian replacements for seasonal festivals of agrarian cults. They were observances of penance, thanksgiving, and petition for divine blessing on the various seasons; they also were occasions of special prayer for clergy to be ordained. These days were observed four times a year.

Rogation days originated in France about the fifth century. They were penitential in character and also occasions of prayer for a bountiful harvest and protection against evil.

Days and Times of Penance

Fridays throughout the year and the season of Lent are penitential times.

Abstinence: Catholics in the U.S., from the age of 14 throughout life, are obliged to abstain from meat on Ash Wednesday, the Fridays of Lent and Good Friday. The law forbids the use of meat, but not of eggs, the products of milk or condiments made of animal fat. Permissible are soup flavored with meat, meat gravy and sauces. The obligation to abstain from meat is not in force on days celebrated as solemnities (e.g., Christmas, Sacred Heart).

Fasting: Catholics in the U.S., from the day after their 18th birthday to the day after their 59th birthday, are also obliged to fast on Ash Wednesday and Good Friday. The law allows only one full meal a day, but does not prohibit the taking of some food in the morning and evening, observing as far as quantity and quality are concerned approved local custom. The order of meals is optional, i.e., the full meal may be taken in the evening instead of at midday. Also: (1) The combined quantity of food taken at the two lighter meals should not exceed the quantity taken at the full meal; (2) The drinking of ordinary liquids does not break the fast.

Obligation: There is a general obligation to do penance for sins committed and for the remission of punishment resulting from sin. Substantial observance of fasting and abstinence, prescribed for the community of the Church, is a matter of serious obligation; it allows, however, for alternate ways of doing penance (e.g., works of charity, prayer and prayer-related practices, almsgiving).

Readings at Mass

Scriptural readings for Masses on Sundays and holy days are indicated under the appropriate dates in the calendar pages.

Monthly Prayer Intentions

Intentions chosen and recommended by the Holy Father to the prayers of the faithful and circulated by the Apostleship of Prayer are given for each month of the calendar. Pope John Paul II expressed his desire that all Catholics make these intentions their own ''in the certainty of being united with the Holy Father and praying according to his intentions and desires.''

Celebrations in U.S. Particular Calendar

The General Norms for the Liturgical Year and the Calendar, issued in 1969 and published along with the General Roman Calendar for the Universal Church, noted that the calendar consists of the General Roman Calendar used by the entire Church and of particular calendars used in particular churches (nations or dioceses) or in families of religious.

The particular calendar for the U.S. contains the following celebrations:

January

  • 4, Elizabeth Ann Seton
  • 5, John Neumann
  • 6, André Bessette

March

  • 3, Katharine Drexel

May

  • 10, Damien DeVeuster
  • 15, Isidore the Farmer

July

  • 1, Bl. Junípero Serra
  • 4, Independence Day
  • 14, Kateri Tekakwitha

August

  • 18, Jane Frances de Chantal

September

  • 9, Peter Claver

October

  • 6, Bl. Marie-Rose Durocher
  • 19, Isaac Jogues and John de Brébeuf and Companions
  • 20, Paul of the Cross

November

  • 13, Frances Xavier Cabrini
  • 18, Rose Philippine Duchesne
  • 23, Bl. Miguel Agustín Pro
  • Fourth Thursday, Thanksgiving Day

December

  • 9, Juan Diego
  • 12, Our Lady of Guadalupe