Old Calendar Translation Table    

Copyright © 2000 by Roman Orthodox Church

Old Style to New Style

This simple Table allows you to convert dates from the Church (Julian) Calendar - Old Style [OS] dates
to the Secular (Gregorian) Calendar - New Style [NS] dates (e.g., Christmas - December 25 OS = January 7 NS).

January

Church (Old Style) = Secular (New Style)

January 1 = January 14       GREAT FEAST, THE CIRCUMCISION OF OUR LORD JESUS CHRIST.
January 2 = January 15       Feast of the Holy Name of Jesus.
January 3 = January 16       The 9th Day of Christmas.
January 4 = January 17       The 10th Day of Christmas.
January 5 = January 18       Eve of Epiphany. 11th Day of Christmas.
January 6 = January 19       GREAT FEAST, EPIPHANY OF OUR LORD JESUS CHRIST. 12th Day of Christmas.
January 7 = January 20       Earliest 1st Sunday of Epiphany (Feast of the Holy Family).
January 8 = January 21
January 9 = January 22
January 10 = January 23
January 11 = January 24
January 12 = January 25
January 13 = January 26       Octave Day - Last day of Christmastide. Latest 1st Sunday of Epiphany.
January 14 = January 27       Earliest 2nd Sunday after Epiphany.
January 15 = January 28
January 16 = January 29
January 17 = January 30
January 18 = January 31
January 19 = February 1
January 20 = February 2       Latest 2nd Sunday after Epiphany.
January 21 = February 3       Earliest 3rd Sunday after Epiphany.
January 22 = February 4
January 23 = February 5
January 24 = February 6
January 25 = February 7
January 26 = February 8
January 27 = February 9       Latest 3rd Sunday after Epiphany.
January 28 = February 10       Earliest 4th Sunday after Epiphany.
January 29 = February 11
January 30 = February 12       Feast of the Three Holy Hierarchs.
January 31 = February 13

February

Church (Old Style) = Secular (New Style)

February 1 = February 14       Candlemas Eve.
February 2 = February 15       GREAT FEAST OF CANDLEMAS - PURIFICATION
                                                   OF THE BLESSED VIRGIN MARY - "LADY DAY".
February 3 = February 16       Latest 4th Sunday after Epiphany.
February 4 = February 17       Earliest 5th Sunday after Epiphany.
February 5 = February 18
February 6 = February 19
February 7 = February 20
February 8 = February 21
February 9 = February 22
February 10 = February 23       Feast of St. Scholastica, Virgin. Latest 5th Sunday after Epiphany.
February 11 = February 24       Earliest 6th Sunday after Epiphany.
February 12 = February 25
February 13 = February 26
February 14 = February 27
February 15 = February 28
February 16 = March 1
February 17 = March 2       Latest 6th Sunday after Epiphany.
February 18 = March 3
February 19 = March 4
February 20 = March 5
February 21 = March 6
February 22 = March 7
February 23 = March 8
February 24 = March 9
February 25 = March 10
February 26 = March 11
February 27 = March 12
February 28 = March 13

March

Church (Old Style) = Secular (New Style)

March 1 = March 14
March 2 = March 15
March 3 = March 16
March 4 = March 17
March 5 = March 18
March 6 = March 19
March 7 = March 20
March 8 = March 21
March 9 = March 22
March 10 = March 23
March 11 = March 24
March 12 = March 25
March 13 = March 26       Feast of St. Theophan (Fan Noli) of America.
March 14 = March 27
March 15 = March 28
March 16 = March 29
March 17 = March 30       Feast of Saint Patrick of Ireland.
March 18 = March 31
March 19 = April 1       Solemnity of St. Joseph, Spouse of the Blessed Virgin Mary.
March 20 = April 2
March 21 = April 3       Feast of Saint Benedict of Nursia, Abbot, Father of Western Monasticism.
March 22 = April 4
March 23 = April 5
March 24 = April 6
March 25 = April 7       GREAT FEAST OF THE INCARNATION OF OUR LORD JESUS CHRIST -
                                        THE ANNUNCIATION TO THE BLESSED VIRGIN MARY.
March 26 = April 8
March 27 = April 9
March 28 = April 10
March 29 = April 11
March 30 = April 12
March 31 = April 13

Moveable - ASH WEDNESDAY is the Wednesday following the 7th Sunday before Easter.
[EMBER DAYS - The Wednesday, Friday & Saturday following after both Ash Wednesday and the 6th Sunday before Easter are the Lent Ember Days - fasting days.]

Moveable GREAT FEAST OF PALM SUNDAY - THE ENTRANCE OF THE LORD INTO JERUSALEM (The Sunday before Easter Sunday).

Moveable GREAT FEAST OF EASTER SUNDAY / HOLY PASCHA - THE FEAST OF THE RESURRECTION OF OUR LORD JESUS CHRIST.

Moveable GREAT FEAST OF ASCENSION OF OUR LORD JESUS CHRIST (Thursday, the 40th day after Easter Sunday and following the 5th Sunday after Easter).

Moveable GREAT FEAST OF PENTECOST SUNDAY - DESCENT OF THE HOLY SPIRIT ("WHITSUNDAY," the 7th Sunday, and the 50th day, after Easter Sunday).

[EMBER DAYS - The Wednesday, Friday & Saturday following Pentecost Sunday are the Pentecost Ember Days - fasting days.]

April

Church (Old Style) = Secular (New Style)

April 1 = April 14
April 2 = April 15
April 3 = April 16
April 4 = April 17
April 5 = April 18
April 6 = April 19
April 7 = April 20
April 8 = April 21
April 9 = April 22
April 10 = April 23
April 11 = April 24
April 12 = April 25
April 13 = April 26
April 14 = April 27
April 15 = April 28
April 16 = April 29
April 17 = April 30
April 18 = May 1
April 19 = May 2
April 20 = May 3
April 21 = May 4
April 22 = May 5
April 23 = May 6
April 24 = May 7
April 25 = May 8       Greater Litanies and St. Mark the Evangelist.
April 26 = May 9
April 27 = May 10
April 28 = May 11
April 29 = May 12
April 30 = May 13

May

Church (Old Style) = Secular (New Style)

May 1 = May 14       SS. Philip & James, Apostles.
May 2 = May 15
May 3 = May 16       Feast of the Finding of the Holy Cross.
May 4 = May 17
May 5 = May 18
May 6 = May 19
May 7 = May 20
May 8 = May 21
May 9 = May 22
May 10 = May 23
May 11 = May 24
May 12 = May 25
May 13 = May 26
May 14 = May 27
May 15 = May 28
May 16 = May 29
May 17 = May 30
May 18 = May 31
May 19 = June 1
May 20 = June 2
May 21 = June 3
May 22 = June 4
May 23 = June 5
May 24 = June 6
May 25 = June 7
May 26 = June 8
May 27 = June 9
May 28 = June 10
May 29 = June 11
May 30 = June 12
May 31 = June 13

June

Church (Old Style) = Secular (New Style)

June 1 = June 14
June 2 = June 15
June 3 = June 16
June 4 = June 17
June 5 = June 18
June 6 = June 19
June 7 = June 20
June 8 = June 21
June 9 = June 22
June 10 = June 23
June 11 = June 24
June 12 = June 25
June 13 = June 26
June 14 = June 27
June 15 = June 28
June 16 = June 29
June 17 = June 30
June 18 = July 1
June 19 = July 2
June 20 = July 3
June 21 = July 4
June 22 = July 5
June 23 = July 6
June 24 = July 7       Feast of the Nativity of Saint John the Baptist.
June 25 = July 8
June 26 = July 9
June 27 = July 10
June 28 = July 11       Eve of the Feast of Saints Peter and Paul.
June 29 = July 12       Feast of the Holy Apostles, Saints Peter and Paul.
June 30 = July 13

July

Church (Old Style) = Secular (New Style)

July 1 = July 14       Feast of the Most Precious Blood of Our Lord.
July 2 = July 15       Feast of the Visitation of the Blessed Virgin Mary.
July 3 = July 16
July 4 = July 17
July 5 = July 18
July 6 = July 19
July 7 = July 20
July 8 = July 21
July 9 = July 22
July 10 = July 23
July 11 = July 24       Solemnity of Saint Benedict of Nursia, Abbot.
                                   Repose of Saint Aftimios Ofiesh of America, Confessor (1966).
July 12 = July 25
July 13 = July 26
July 14 = July 27
July 15 = July 28
July 16 = July 29
July 17 = July 30
July 18 = July 31
July 19 = August 1
July 20 = August 2
July 21 = August 3
July 22 = August 4       Feast of Saint Mary Magdalene, Holy Myrrh-Bearer and Apostle-to-the-Apostles.
July 23 = August 5
July 24 = August 6
July 25 = August 7       Feast of Saint James the Greater, Apostle.
July 26 = August 8       Feast of Saint Anne, mother of the Blessed Virgin Mary.
July 27 = August 9
July 28 = August 10
July 29 = August 11
July 30 = August 12
July 31 = August 13

August

Church (Old Style) = Secular (New Style)

August 1 = August 14       Feast of Saint Peter's Chains.
August 2 = August 15
August 3 = August 16
August 4 = August 17
August 5 = August 18
August 6 = August 19       GREAT FEAST OF THE TRANSFIGURATION OF OUR LORD JESUS CHRIST.
August 7 = August 20
August 8 = August 21
August 9 = August 22
August 10 = August 23       Feast of St. Laurence.
August 11 = August 24
August 12 = August 25
August 13 = August 26
August 14 = August 27       Eve of the Feast of the Assumption.
August 15 = August 28       GREAT FEAST OF THE ASSUMPTION OF THE BLESSED VIRGIN MARY.
August 16 = August 29       Feast of St. Joachim, father of the Blessed Virgin Mary.
August 17 = August 30
August 18 = August 31
August 19 = September 1
August 20 = September 2
August 21 = September 3
August 22 = September 4       Feast of the Immaculate Heart of the Blessed Virgin Mary.
August 23 = September 5
August 24 = September 6       Feast of Saint Bartholomew.
August 25 = September 7
August 26 = September 8
August 27 = September 9
August 28 = September 10
August 29 = September 11       Feast of the Beheading of Saint John the Baptist.
August 30 = September 12
August 31 = September 13

September

Church (Old Style) = Secular (New Style)

September 1 = September 14
September 2 = September 15
September 3 = September 16
September 4 = September 17
September 5 = September 18
September 6 = September 19
September 7 = September 20
September 8 = September 21       GREAT FEAST OF THE NATIVITY OF THE BLESSED VIRGIN MARY.
September 9 = September 22
September 10 = September 23
September 11 = September 24
September 12 = September 25
September 13 = September 26
September 14 = September 27       GREAT FEAST OF THE EXALTATION OF THE HOLY AND LIFE-GIVING CROSS.

[EMBER DAYS - The Wednesday, Friday & Saturday following the Feast of the Holy Cross are the September Ember Days - fasting days.]

September 15 = September 28       Feast of Our Lady of Sorrows.
September 16 = September 29
September 17 = September 30
September 18 = October 1
September 19 = October 2
September 20 = October 3
September 21 = October 4       Feast of Saint Matthew, Evangelist.
September 22 = October 5
September 23 = October 6
September 24 = October 7
September 25 = October 8
September 26 = October 9
September 27 = October 10
September 28 = October 11
September 29 = October 12       Feast of Michaelmas - St. Michael the Archangel.
September 30 = October 13

October

Church (Old Style) = Secular (New Style)

October 1 = October 14       Feast of the Protecting Veil of the Holy Theotokos.
October 2 = October 15       Feast of the Holy Guardian Angels.
October 3 = October 16
October 4 = October 17
October 5 = October 18
October 6 = October 19
October 7 = October 20       Feast of the Most Holy Rosary of the Blessed Virgin Mary.
October 8 = October 21
October 9 = October 22
October 10 = October 23
October 11 = October 24       Feast of the Maternity of the Blessed Virgin Mary.
October 12 = October 25
October 13 = October 26
October 14 = October 27
October 15 = October 28
October 16 = October 29
October 17 = October 30
October 18 = October 31       Feast of Saint Luke the Evangelist.
October 19 = November 1
October 20 = November 2
October 21 = November 3
October 22 = November 4
October 23 = November 5
October 24 = November 6
October 25 = November 7       Earliest Feast of Christ the King (Sunday).
October 26 = November 8
October 27 = November 9
October 28 = November 10       Feast of SS. Simon & Jude.
October 29 = November 11
October 30 = November 12
October 31 = November 13       All Hallows' Eve. Latest Feast of Christ the King (Sunday).

November

Church (Old Style) = Secular (New Style)

November 1 = November 14       GREAT FEAST OF ALL SAINTS DAY - "ALL HALLOWS."
November 2 = November 15       Solemnity of All Souls Day (Requiem Masses for the Faithful Departed).
November 3 = November 16
November 4 = November 17
November 5 = November 18
November 6 = November 19
November 7 = November 20
November 8 = November 21
November 9 = November 22       Feast of the Dedication of the Basilica of Saint Saviour.
November 10 = November 23
November 11 = November 24
November 12 = November 25       Feast of All Saints of the Benedictine Order.
November 13 = November 26       Feast of All North American Saints.
November 14 = November 27
November 15 = November 28       Feast of the Repose of Saint Herman of Alaska.
November 16 = November 29
November 17 = November 30
November 18 = December 1       Feast of the Dedication of Basilicas of Holy Apostles Peter and Paul.
November 19 = December 2
November 20 = December 3
November 21 = December 4       GREAT FEAST OF ENTRY OF BLESSED VIRGIN MARY INTO THE TEMPLE.
November 22 = December 5
November 23 = December 6
November 24 = December 7
November 25 = December 8
November 26 = December 9
November 27 = December 10       Earliest First Sunday of Advent.
November 28 = December 11
November 29 = December 12
November 30 = December 13       Feast of Saint Andrew, Apostle, the First-Called.
                                                             The closest Sunday to this date is the First Sunday of Advent,
                                                             which is the beginning of the Ecclesiastical Year and the Temporal Cycle.

December

Church (Old Style) = Secular (New Style)

December 1 = December 14
December 2 = December 15
December 3 = December 16       Latest First Sunday of Advent.
December 4 = December 17       Earliest Second Sunday of Advent.
December 5 = December 18
December 6 = December 19       Feast of Saint Nicholas of Myra, Wonder-Worker.
December 7 = December 20
December 8 = December 21
December 9 = December 22
December 10 = December 23       Latest Second Sunday of Advent.
December 11 = December 24       Earliest Third Sunday of Advent (Gaudete Sunday).
December 12 = December 25       Feast of All North American Martyrs.
December 13 = December 26
December 14 = December 27
December 15 = December 28
December 16 = December 29
December 17 = December 30       Latest Third Sunday of Advent (Gaudete Sunday).

[EMBER DAYS - The Wednesday, Friday & Saturday following the Third Sunday of Advent are the Advent Ember Days - fasting days.]

December 18 = December 31       Earliest Fourth Sunday of Advent.
December 19 = January 1
December 20 = January 2
December 21 = January 3       Feast of Saint Thomas, Apostle.
December 22 = January 4
December 23 = January 5       The Last Day of Advent.
December 24 = January 6       Latest Fourth Sunday of Advent. Advent ends and
                                                             Christmastide begins today on Christmas Eve (Vigil).
December 25 = January 7       GREAT FEAST OF CHRISTMAS - FEAST OF THE NATIVITY
                                                             OF OUR LORD AND SAVIOUR JESUS CHRIST.
December 26 = January 8       Earliest Sunday within the Octave of Christmas.
                                                             Feast of St. Stephen, the First Martyr. The 1st Day of Christmas.
December 27 = January 9       Feast of St. John the Evangelist. The 2nd Day of Christmas.
December 28 = January 10       Childermas - the Feast of the Holy Innocents. The 3rd Day of Christmas.
December 29 = January 11       The 4th Day of Christmas.
December 30 = January 12       The 5th Day of Christmas.
December 31 = January 13       Latest Sunday within the Octave of Christmas. Feast of St. Sylvester I,
                                                             Pope & Confessor. The 6th Day of Christmas.

LEAP YEAR CONVERSION

Church (Old Style) = Secular (New Style)

February 15 = February 28
February 16 = February 29
February 17 = March 1       Latest 6th Sunday after Epiphany.
February 18 = March 2
February 19 = March 3
February 20 = March 4
February 21 = March 5
February 22 = March 6
February 23 = March 7
February 24 = March 8
February 25 = March 9
February 26 = March 10
February 27 = March 11
February 28 = March 12
February 29 = March 13
March 1 = March 14

The dates continue thereafter as in non-leap years.