Keep the year with the Church. Find Mary within it.

Follow the Church’s year, pray the established Marian devotions, and read St. Louis de Montfort and St. Alphonsus on the mysteries of Jesus and His Mother.

Open the calendar

The Church’s year

· Ordinary Time · calendar reference date

The Holy Guardian Angels
Browse the full calendar

The liturgical year under her mantle.

Year B → Year C at Advent · Cycle I · United States Roman Calendar

December 2027

Every day, with the Church’s celebrations and optional memorials

SunMonTueWedThuFriSat
  1. WednesdayDecember 1
  2. ThursdayDecember 2
  3. FridayDecember 3
  4. SaturdayDecember 4
  5. SundayDecember 5
  6. MondayDecember 6
  7. TuesdayDecember 7
  8. WednesdayDecember 8
  9. ThursdayDecember 9
  10. FridayDecember 10
  11. SaturdayDecember 11
  12. SundayDecember 12
  13. MondayDecember 13
  14. TuesdayDecember 14
  15. WednesdayDecember 15
  16. ThursdayDecember 16
  17. FridayDecember 17
  18. SaturdayDecember 18
  19. SundayDecember 19
  20. MondayDecember 20
  21. TuesdayDecember 21
  22. WednesdayDecember 22
  23. ThursdayDecember 23
  24. FridayDecember 24
  25. SaturdayDecember 25
  26. SundayDecember 26
  27. MondayDecember 27
  28. TuesdayDecember 28
  29. WednesdayDecember 29
  30. ThursdayDecember 30
  31. FridayDecember 31
View every day in December
  1. WednesdayDecember 1Advent
  2. ThursdayDecember 2Advent
  3. FridayDecember 3Advent
  4. SaturdayDecember 4Advent
  5. SundayDecember 5Advent
  6. MondayDecember 6Advent
  7. TuesdayDecember 7Advent
  8. WednesdayDecember 8Advent
  9. ThursdayDecember 9Advent
  10. FridayDecember 10Advent
  11. SaturdayDecember 11Advent
  12. SundayDecember 12Advent
  13. MondayDecember 13Advent
  14. TuesdayDecember 14Advent
  15. WednesdayDecember 15Advent
  16. ThursdayDecember 16Advent
  17. FridayDecember 17Advent
  18. SaturdayDecember 18Advent
  19. SundayDecember 19Advent
  20. MondayDecember 20Advent
  21. TuesdayDecember 21Advent
  22. WednesdayDecember 22Advent
  23. ThursdayDecember 23Advent
  24. FridayDecember 24Advent
  25. SaturdayDecember 25Christmas
  26. SundayDecember 26Christmas
  27. MondayDecember 27Christmas
  28. TuesdayDecember 28Christmas
  29. WednesdayDecember 29Christmas
  30. ThursdayDecember 30Christmas
  31. FridayDecember 31Christmas
Marian celebrationSolemnitySunday or feastDevotional observance
Read the month’s observance notes and devotional responses

Keep December with the Church.

Begin with the sacred liturgy. On Mary’s days, let the feast continue in the Rosary, consecration, reparation, and imitation of her virtues.

  1. Weekday

    Advent Weekday

  2. Weekday

    Advent Weekday

  3. Memorial

    Saint Francis Xavier, Priest

  4. Weekday

    Advent Weekday

  5. Optional MemorialMarian witness

    Saint John Damascene, Priest and Doctor of the Church

    Hear St. John Damascene
  6. Devotional observanceMarian

    First Saturday

    Our Lady asked at Fatima for Confession, Holy Communion, five decades of the Rosary, and fifteen minutes of meditation on its mysteries, all offered in reparation to her Immaculate Heart.

    Devotional observance, shown separately from liturgical rank.

    Keep the First Saturday
  7. Sunday

    Second Sunday of Advent

  8. Weekday

    Advent Weekday

  9. Optional Memorial

    Saint Nicholas, Bishop

  10. Memorial

    Saint Ambrose, Bishop and Doctor of the Church

  11. SolemnityMarian

    The Immaculate Conception of the Blessed Virgin Mary (Patronal Feastday of the United States of America)

    From the first instant of her conception, Mary was preserved from original sin by the grace of Christ. In the Immaculate one, God prepares a Mother entirely His own.

    Consecrate yourself through Mary
  12. Weekday

    Advent Weekday

  13. Optional Memorial

    Saint Juan Diego Cuauhtlatoatzin

  14. Weekday

    Advent Weekday

  15. Optional MemorialMarian

    Our Lady of Loreto

    Our Lady of Loreto turns the heart toward the Holy House and the mystery of the Word made flesh in Mary’s home at Nazareth.

    Contemplate the Incarnation
  16. Weekday

    Advent Weekday

  17. Optional Memorial

    Saint Damasus I, Pope

  18. Sunday

    Third Sunday of Advent

  19. Memorial

    Saint Lucy, Virgin and Martyr

  20. Memorial

    Saint John of the Cross, Priest and Doctor of the Church

  21. Weekday

    Advent Weekday

  22. Weekday

    Advent Weekday

  23. Weekday

    Advent Weekday

  24. Weekday

    Advent Weekday

  25. Sunday

    Fourth Sunday of Advent

  26. Weekday

    Advent Weekday

  27. Weekday

    Advent Weekday

  28. Commemoration

    Saint Peter Canisius, Priest and Doctor of the Church

  29. Weekday

    Advent Weekday

  30. Weekday

    Advent Weekday

  31. Commemoration

    Saint John of Kanty, Priest

  32. Weekday

    Advent Weekday

  33. Solemnity

    The Nativity of the Lord (Christmas)

  34. FeastMarian

    The Holy Family of Jesus, Mary and Joseph

    Jesus, Mary, and Joseph reveal the home ordered wholly to God. Place every family beneath their protection and learn the hidden obedience of Nazareth.

    Place your home beneath their care
  35. Feast

    Saint John, Apostle and Evangelist

  36. Feast

    The Holy Innocents, Martyrs

  37. Weekday

    Fifth Day within the Octave of the Nativity of the Lord

  38. Commemoration

    Saint Thomas Becket, Bishop and Martyr

  39. Weekday

    Sixth Day within the Octave of the Nativity of the Lord

  40. Weekday

    Seventh Day within the Octave of the Nativity of the Lord

  41. Commemoration

    Saint Sylvester I, Pope

This year’s observance notes

The civil year crosses two liturgical years. Transfers and precedence below follow the official annual U.S. calendar.

  • The Annunciation is transferred from Holy Week to Monday, April 5.
  • The Ascension is shown on Sunday, May 9, as observed in most U.S. dioceses. The ecclesiastical provinces of Boston, Hartford, New York, Omaha, and Philadelphia observe it on Thursday, May 6.
  • Our Lady of Guadalupe is omitted because December 12 is the Third Sunday of Advent; the USCCB permits suitable Marian honor within the Sunday celebration.
Open the official 2027 USCCB calendar

Keep the Church’s calendar. Open a date for the principal observance, reading references, and permitted choices in the United States Roman Calendar.

Read with the saints. The daily readings draw from Montfort’s True Devotion and The Secret of the Rosary, and St. Alphonsus’s The Glories of Mary. Each passage links to its place in the complete book.

Honor Mary in the mysteries her saints contemplate.

St. Alphonsus gives discourses for Mary’s feasts, meditations on her sorrows, and prayers that lead the reader to her. Montfort directs those consecrated to Jesus through Mary to honor the Incarnation especially on March 25. Read their words, make their prayers your own, and keep the feasts with the Church.

  1. Receive the mystery.Attend the Church’s liturgy and hear the Word with Mary’s faith.
  2. Contemplate with her.Pray the Rosary mystery or Marian prayer that opens the feast more deeply.
  3. Become what you celebrate.Imitate her fiat, purity, charity, sorrow, confidence, and total belonging to Jesus.
Pray with Mary now

The calendar follows the Church’s own order.

Dates and ranks follow the annual calendar for the Dioceses of the United States. The interactive view includes every day of 2026–2028: its principal observance, optional memorials, and a page with reading references, Marian prayer, and a faithful response. Local proper calendars may differ; the annual USCCB editions remain linked for verification.

  1. 01
    USCCB · Liturgical Calendar for the Dioceses of the United States

    Official annual dates, ranks, colors, readings, and U.S. proper celebrations.

  2. 02
    St. Alphonsus de Liguori · The Glories of Mary, Part II

    Discourses on Mary’s feasts, her seven sorrows, and her virtues.

  3. 03
    St. Louis de Montfort · True Devotion §§243–248

    Honoring the Incarnation and the Blessed Virgin in a life of consecration.

  4. 04
    Decree · Mary, Mother of the Church

    The obligatory memorial established for the Monday after Pentecost.