List of movable Western Christian observances

This is a list of movable observances within Western Christianity. It includes secular observances which are calculated by religious observances.

This list does not necessarily imply either official status nor general observance.

January
First Sunday of the year, unless the Sunday falls on January 1, 6, or 7, then January 2: January 5 First Monday: January 6  Monday after January 6: January 12 Sunday following January 6: January 12  Day after Plough Sunday: January 13  Third Sunday: January 19 
 * Feast of the Holy Name of Jesus (Roman Catholicism, according to the General Roman Calendar of 1960)
 * Handsel Monday (Scotland and Northern England)
 * Baptism of the Lord – (Western Christianity in countries where Epiphany is celebrated on January 7 or 8)
 * Baptism of the Lord (Roman Catholicism, Anglicanism, Lutheranism, in countries where Epiphany is celebrated on January 7 or 8)
 * Plough Sunday (England)
 * Plough Monday (England)
 * Feast of the Santo Niño (Philippines)

February
9th Sunday before Easter in Western Christianity: February 9  2nd Sunday before Ash Wednesday (Western Christianity): February 16  Last Thursday before Lent (Western Christianity): February 20 Saturday before Ash Wednesday: February 22 Sunday before Ash Wednesday (Western Christianity): February 23 Monday before Ash Wednesday: February 24  Tuesday before Ash Wednesday: February 25  46 days before Easter: February 26 Friday after Ash Wednesday: February 28 
 * Septuagesima Sunday
 * Sexagesima
 * Fat Thursday
 * Festum Ovorum (University of Oxford)
 * Quinquagesima
 * Shrove Monday
 * Fastelavn (Denmark/Norway)
 * Nickanan Night (Cornwall)
 * Rosenmontag (Germany)
 * Shrove Tuesday
 * Fastnacht (Pennsylvania Dutch)
 * Feast of the Holy Winding Sheet of Christ
 * Fettisdagen (Sweden)
 * Laskiainen (Finland, Finnish-Americans)
 * Mardi Gras
 * National Pancake Day (Netherlands)
 * Powder Day (Tolox, Spain)
 * Užgavėnės (Lithuania)
 * Ash Wednesday/Lent
 * National No Smoking Day (Ireland)
 * Feast of the Crown of Thorns

March
First Sunday of Lent: March 1  March 19, unless the 19th is a Sunday, then March 20: March 19  Fourth Sunday of Lent, 21 days before Easter Sunday: March 22  Fifth Sunday of Lent: March 29
 * People's Sunday (Żabbar, Malta)
 * Quadragesima Sunday
 * Feast of Joseph of Nazareth (Western Christianity)
 * Father's Day (Spain, Portugal, Belgium, Italy, Honduras, and Bolivia)
 * Las Fallas, celebrated on the week leading to March 19. (Valencia)
 * "Return of the Swallow", annual observance of the swallows' return to Mission San Juan Capistrano in California.
 * Laetare Sunday
 * Mothering Sunday
 * Pretzel Sunday (Luxembourg)
 * Passion Sunday (celebrated in the extraordinary form of the Roman Rite according to the General Roman Calendar of 1960)

April
Week before Easter:  Second Friday of April: April 10  Easter Week: April 12-18  Sunday after Easter: April 19 Sunday before Earth Day (April 22): April 19 
 * Holy Week
 * Palm Sunday: April 5
 * Holy Monday: April 6
 * Holy Tuesday: April 7
 * Holy Wednesday: April 8
 * Maundy Thursday: April 9
 * Good Friday: April 10
 * Fast and Prayer Day (Liberia)
 * Holy Saturday: April 11
 * Easter: April 12 (Eastertide begins)
 * Aberri Eguna (Basque)
 * Lieldienas (Latvia)
 * Easter Monday: April 13
 * Family Day (South Africa)
 * Śmigus-Dyngus, regional variant of Easter Monday (Poland, Ukraine)
 * Easter Tuesday: April 14(Public holiday in Tasmania)
 * Easter Wednesday: April 15
 * Saint Gregory's Day (Żejtun, Malta)
 * Easter Thursday: April 16
 * Easter Friday: April 17
 * Easter Saturday: April 18
 * Divine Mercy Sunday
 * Earth Day Sunday

May
Third Sunday after Easter: May 3 Monday and Tuesday in the week following the third Sunday of Easter: May 4–5 Fourth Sunday after Easter: May 10 Fourth Friday after Easter: May 15 Third Sunday of May:  Sunday preceding the Rogation days: May 17 Monday, Tuesday, and Wednesday preceding Feast of the Ascension: May 18–20 39 days after Easter: May 21 Seventh Sunday/49 days after Easter: May 31
 * Jubilate Sunday
 * Hocktide (England)
 * Cantate Sunday
 * Good Shepherd Sunday
 * Store Bededag (Denmark)
 * Feast of Our Lady of the Audience
 * Rogation Sunday
 * Minor Rogation days
 * Feast of the Ascension
 * Father's Day (Germany)
 * Festa della Sensa (Venice)
 * Global Day of Prayer
 * Sheep Festival (Cameroon)
 * Pentecost begins
 * Whitsun

June
Day after Whitsun: June 1 Day after Whit Monday: June 2 First Thursday after start of Pentecost: June 4 Friday of the week of Whitsun: June 5 First Sunday after Pentecost: June 7 Thursday after Trinity Sunday; 60 days after Easter, or the Sunday immediately following this: June 11 First Thursday after Corpus Christi: June 12 19 days after Pentecost: June 18 Sunday nearest to June 29: June 28
 * Whit Monday
 * Memorial of the Blessed Virgin Mary, Mother of the Church
 * Azores Day (Portugal)
 * Whit Tuesday
 * Whit Friday (North West England)
 * Trinity Sunday
 * Corpus Christi (feast):
 * Lajkonik (Kraków, Poland)
 * Feast of the Sacred Heart
 * Petertide (Anglican)

July
Second Sunday in July: July 12 Last Sunday in July: July 26
 * Sea Sunday
 * Reek Sunday (Ireland)

August
Third Weekend: August 15-16
 * Festa do Rosário (Córrego Danta, Brazil)

September
Thursday following the first Sunday: September 6 First Sunday after September 4: September 6 Weekend after first Monday: September 7 Second Sunday: September 13 Third Sunday: September 20 Monday after third Sunday: September 20
 * Jeûne genevois (Canton of Geneva, Switzerland)
 * Start of Wakes Week (Parts of England and Scotland)
 * Abbots Bromley Horn Dance (Abbots Bromley, Staffordshire, England)
 * Feast of Sts Cosmas and Damian (Italian-American)
 * Education Sunday (British Churches)
 * Racial Justice Sunday (British Churches)
 * Federal Day of Thanksgiving, Repentance and Prayer (Switzerland)
 * Lundi du Jeûne: (Vaud, Switzerland20

October
First Sunday: October 4 Second Sunday: October 11 Last Sunday: October 25
 * Day of Prayer for the Peace of Jerusalem (Pentecostal Christianity)
 * World Communion Sunday
 * White Sunday (Tonga, Samoa)
 * Feast of Christ the King (Tridentine Mass Catholics)

November
Saturday between October 31 – November 6:  Second Sunday before Advent: November 8 Second Wednesday before the First Sunday in Advent: November 11 Sunday nearest November 11: November 14 Last Sunday before First Advent Sunday: November 22 Fourth Sunday before Christmas Day: November 29 
 * All Saints' Day (Finland and Sweden only)
 * Volkstrauertag (Germany)
 * Buß- und Bettag (Saxony, Germany, Lutheran, Reformed (Calvinist) and United denominations)
 * Remembrance Sunday (United Kingdom and certain Commonwealth countries)
 * Feast of Christ the King (Roman Catholic)
 * Stir-up Sunday (Anglican Church)
 * Totensonntag (mainly Lutheran)
 * World Youth Day (Next International-level World Youth Day will be in August 2023 Roman Catholicism)
 * Advent Sunday (start of Advent, Western Christianity)

December
First Friday: December 4  First Sunday: December 6 Seven days, starting on First Monday: December 7-13  Sunday two weeks before Christmas: December 13  Second-final Sunday before Christmas Day: December 13  Thursday of the last full week before Christmas: December 17 Last Friday before Christmas: December 18  Last Saturday before Christmas: December 19  Sunday before Christmas: December 20  Winter Solstice: December 21  The Sunday between Christmas Day and New Year's Day (both exclusive), or December 30 if both Christmas Day and the Solemnity of Mary, Mother of God are Sundays: December 27
 * Gospel Day (Marshall Islands)
 * First Presidency's Christmas Devotional (The Church of Jesus Christ of Latter-day Saints)
 * Chalica (Unitarian Universalism)
 * Detinjci (Serbia)
 * Gaudete Sunday (Western Christianity)
 * Chewidden Thursday (Cornwall)
 * National Regifting Day (United States)
 * Black Friday (partying) (secular, United Kingdom)
 * Super Saturday (secular, United States)
 * Christmas Sunday
 * Honesty Day (Italy)
 * Blue Christmas (holiday)
 * Feast of the Holy Family (Roman Catholicism)