- International
- National and local
- Religious feast days
April Holidays and Observances
Every fixed-date holiday and observance in April, from international days to national holidays and religious feast days. Select a day to see its full list. The dates are the same every year, so holidays whose date moves, such as Easter, are not listed. All entries come from Wikipedia. For the events and famous birthdays of the month, see what happened in April in history.
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17 holidays
2
20 holidays
3
7 holidays
4
13 holidays
5
20 holidays
6
16 holidays
7
14 holidays
8
12 holidays
9
20 holidays
10
12 holidays
11
13 holidays
12
16 holidays
13
9 holidays
14
23 holidays
15
14 holidays
16
18 holidays
17
12 holidays
18
17 holidays
19
9 holidays
20
13 holidays
21
16 holidays
22
15 holidays
23
20 holidays
24
23 holidays
25
15 holidays
26
17 holidays
27
20 holidays
28
15 holidays
29
Not available
30
28 holidays
Today's holidays
All April holidays by day
April has 464 fixed-date holidays and observances, including 30 international days, 143 national and local holidays, and 291 religious feast days. Highlights include World Autism Awareness Day on April 2 and International Day of Conscience on April 5.
National and local
- April Fools' Day Wikipedia source
- Odisha Day (Odisha, India) Wikipedia source
- Arbor Day (Tanzania) Wikipedia source
- Civil Service Day (Thailand) Wikipedia source
- Cyprus National Day (Cyprus) Wikipedia source
- Edible Book Day Wikipedia source
- Fossil Fools Day Wikipedia source
- Kha b-Nisan, the Assyrian New Year (Assyrian people) Wikipedia source
Religious feast days
- Cellach of Armagh Wikipedia source
- Hugh of Grenoble Wikipedia source
- Frederick Denison Maurice (Church of England) Wikipedia source
- Mary of Egypt Wikipedia source
- Melito of Sardis Wikipedia source
- Tewdrig Wikipedia source
- Theodora Wikipedia source
- Walric, abbot of Leuconay Wikipedia source
- April 1 (Eastern Orthodox liturgics) Wikipedia source
International
- International Children's Book Day (International) Wikipedia source
- World Autism Awareness Day (International) Wikipedia source
National and local
- Thai Heritage Conservation Day (Thailand) Wikipedia source
- Unity of Peoples of Russia and Belarus Day (Belarus) Wikipedia source
- Malvinas Day (Argentina) Wikipedia source
Religious feast days
- Abundius of Como Wikipedia source
- Amphianus of Lycia Wikipedia source
- Æbbe the Younger Wikipedia source
- Bronach of Glen-Seichis (Irish martyrology) Wikipedia source
- Blessed Elisabetta Vendramini Wikipedia source
- Francis of Paola Wikipedia source
- Francisco Coll Guitart Wikipedia source
- Henry Budd (Anglican Church of Canada) Wikipedia source
- Blessed Laura Evangelista Alvarado Cardozo Wikipedia source
- Blessed Nicholas Charnetsky Wikipedia source
- Nicetius of Lyon Wikipedia source
- Theodosia of Tyre Wikipedia source
- Urban of Langres Wikipedia source
- Blessed Vilmos Apor Wikipedia source
- April 2 (Eastern Orthodox liturgics) Wikipedia source
Religious feast days
- Agape, Chionia, and Irene Wikipedia source
- Burgundofara Wikipedia source
- Joseph the Hymnographer Wikipedia source
- Luigi Scrosoppi Wikipedia source
- Piotr Edward Dankowski Wikipedia source
- Richard of Chichester Wikipedia source
- April 3 (Eastern Orthodox liturgics) Wikipedia source
National and local
- Children's Day (Hong Kong, Taiwan) Wikipedia source
- Independence Day, celebrates the independence of Senegal from France (1960) Wikipedia source
- Peace Day (Angola) Wikipedia source
- One of the possible days for Qingming Festival Wikipedia source
- NATO Day Wikipedia source
Religious feast days
- Benedict the Moor Wikipedia source
- Gaetano Catanoso Wikipedia source
- Isidore of Seville Wikipedia source
- Martin Luther King Jr. (Episcopal Church (USA)) Wikipedia source
- Reginald Heber (Anglican Church of Canada) Wikipedia source
- Tigernach of Clones Wikipedia source
- Plato of Sakkoudion Wikipedia source
- April 4 (Eastern Orthodox liturgics) Wikipedia source
International
- First Contact Day (International observance) Wikipedia source
- International Day of Conscience Wikipedia source
National and local
- Cold Food Festival, held on April 4 if it is a leap year (China); and its related observances: Wikipedia source
- Children's Day (Palestinian territories) Wikipedia source
- Sikmogil (South Korea) Wikipedia source
- National Maritime Day is observed in India, in commemoration of the first voyage of SS Loyalty of the Scindia Steam Navigation Company Ltd. in 1919 Wikipedia source
Religious feast days
- Agape, Chionia, and Irene Wikipedia source
- Albert of Montecorvino Wikipedia source
- Catherine of Palma Wikipedia source
- Derfel Gadarn Wikipedia source
- Æthelburh of Kent Wikipedia source
- Gerald of Sauve-Majeure Wikipedia source
- Juliana of Liège Wikipedia source
- Maria Crescentia Höss Wikipedia source
- Blessed Mariano de la Mata Wikipedia source
- Pandita Mary Ramabai (Episcopal Church (USA)) Wikipedia source
- Ruadhán of Lorrha Wikipedia source
- Vincent Ferrer Wikipedia source
- April 5 (Eastern Orthodox liturgics) Wikipedia source
- Earliest day on which Sham el-Nessim can fall, while May 9 is the latest; celebrated on Monday after the Orthodox Easter (Egypt) Wikipedia source
International
- International Day of Sport for Development and Peace Wikipedia source
- International Asexuality Day Wikipedia source
National and local
- Chakri Day, commemorating the establishment of the Chakri dynasty. (Thailand) Wikipedia source
- National Fisherman Day (Indonesia) Wikipedia source
- New Beer's Eve (United States) Wikipedia source
- Tartan Day (United States & Canada) Wikipedia source
- Waltzing Matilda Day (Australia) Wikipedia source
Religious feast days
- Albrecht Dürer and Lucas Cranach (Lutheran Church) Wikipedia source
- Brychan Wikipedia source
- Eutychius of Constantinople Wikipedia source
- Galla of Rome Wikipedia source
- Marcellinus of Carthage Wikipedia source
- Notker the Stammerer Wikipedia source
- Blessed Pierina Morosini Wikipedia source
- Pope Sixtus I Wikipedia source
- April 6 (Eastern Orthodox liturgics) Wikipedia source
International
- World Health Day (International observance) Wikipedia source
National and local
- Flag Day (Slovenia) Wikipedia source
- Women's Day (Mozambique) Wikipedia source
Religious feast days
- Christian feast days: Aibert of Crespin Wikipedia source
- Christian feast days: Blessed Alexander Rawlins Wikipedia source
- Christian feast days: Blessed Edward Oldcorne and Blessed Ralph Ashley Wikipedia source
- Christian feast days: Brynach Wikipedia source
- Christian feast days: Hegesippus Wikipedia source
- Christian feast days: Henry Walpole Wikipedia source
- Christian feast days: Hermann Joseph Wikipedia source
- Christian feast days: Jean-Baptiste de La Salle Wikipedia source
- Christian feast days: Blessed Maria Assunta Pallotta Wikipedia source
- Christian feast days: Patriarch Tikhon of Moscow (Eastern Orthodox Church, Episcopal Church (USA)) Wikipedia source
- Christian feast days: April 7 (Eastern Orthodox liturgics) Wikipedia source
International
- International Romani Day Wikipedia source
National and local
- Buddha's Birthday, also known as Hana Matsuri, "Flower Festival" (Japan) Wikipedia source
- Earliest day on which Fast and Prayer Day can fall, while April 14 is the latest; celebrated on the second Friday in April (Liberia) Wikipedia source
Religious feast days
- Anne Ayres (Episcopal Church (USA)) Wikipedia source
- Blessed August Czartoryski Wikipedia source
- Constantina Wikipedia source
- Pope Dionysius of Alexandria Wikipedia source
- Julie Billiart of Namur Wikipedia source
- Perpetuus Wikipedia source
- Walter of Pontoise Wikipedia source
- William Augustus Muhlenberg (Episcopal Church (USA)) Wikipedia source
- April 8 (Eastern Orthodox liturgics) Wikipedia source
National and local
- Baghdad Liberation Day (Iraqi Kurdistan) Wikipedia source
- Constitution Day (Kosovo) Wikipedia source
- Day of National Unity (Georgia) Wikipedia source
- Day of Valor or Araw ng Kagitingan (Philippines) Wikipedia source
- Martyr's Day (Tunisia) Wikipedia source
- Mikael Agricola Day, also known as Day of the Finnish Language (Finland) Wikipedia source
- National Former Prisoner of War Recognition Day (United States) Wikipedia source
- Remembrance for Haakon Sigurdsson (The Troth) Wikipedia source
- Vimy Ridge Day (Canada) Wikipedia source
- Valour Day (CRPF) Wikipedia source
Religious feast days
- Acacius of Amida Wikipedia source
- Casilda of Toledo Wikipedia source
- Demetrius of Thessaloniki Wikipedia source
- Dietrich Bonhoeffer (Anglicanism, Lutheranism) Wikipedia source
- Gaucherius Wikipedia source
- Materiana Wikipedia source
- Blessed Thomas of Tolentino Wikipedia source
- Waltrude Wikipedia source
- April 9 (Eastern Orthodox liturgics) Wikipedia source
- Feast of the Second Day of the Writing of the Book of the Law (Thelema) Wikipedia source
International
- Siblings Day (International observance) Wikipedia source
National and local
- Day of the Builder (Azerbaijan) Wikipedia source
Religious feast days
- Blessed Anthony Neyrot Wikipedia source
- Fulbert of Chartres Wikipedia source
- James, Azadanus and Abdicius Wikipedia source
- Magdalene of Canossa Wikipedia source
- Mikael Agricola (Lutheran) Wikipedia source
- Pierre Teilhard de Chardin (Episcopal Church) Wikipedia source
- William of Ockham (Anglicanism) Wikipedia source
- William Law (Anglicanism) Wikipedia source
- April 10 (Eastern Orthodox liturgics) Wikipedia source
- Feast of the Third Day of the Writing of the Book of the Law (Thelema) Wikipedia source
International
- International Louie Louie Day Wikipedia source
- World Parkinson's Day Wikipedia source
National and local
- Juan Santamaría Day, anniversary of his death in the Second Battle of Rivas. (Costa Rica) Wikipedia source
Religious feast days
- Antipas of Pergamum (Greek Orthodox Church) Wikipedia source
- Barsanuphius Wikipedia source
- Elena Guerra Wikipedia source
- Gemma Galgani Wikipedia source
- Blessed George Gervase Wikipedia source
- Godeberta Wikipedia source
- Guthlac of Crowland Wikipedia source
- George Selwyn (Anglicanism) Wikipedia source
- Stanislaus of Szczepanów Wikipedia source
- April 11 (Eastern Orthodox liturgics) Wikipedia source
International
- Commemoration of first human in space by Yuri Gagarin: International Day of Human Space Flight Wikipedia source
- Commemoration of first human in space by Yuri Gagarin: Yuri's Night (International observance) Wikipedia source
National and local
- Children's Day (Bolivia) Wikipedia source
- Commemoration of first human in space by Yuri Gagarin: Cosmonautics Day (Russia) Wikipedia source
- Halifax Day (North Carolina) Wikipedia source
- National Redemption Day (Liberia) Wikipedia source
Religious feast days
- Adoniram Judson (Episcopal Church) Wikipedia source
- Alferius Wikipedia source
- Blessed Angelo Carletti di Chivasso Wikipedia source
- Erkembode Wikipedia source
- Giuseppe Moscati Wikipedia source
- Pope Julius I Wikipedia source
- Sabbas the Goth Wikipedia source
- Teresa of the Andes Wikipedia source
- Zeno of Verona Wikipedia source
- April 12 (Eastern Orthodox liturgics) Wikipedia source
National and local
- Songkran Songkran (Thailand) Wikipedia source
- Songkran Water-Sprinkling Festival Wikipedia source
- Vaisakhi (between 1902 and 2011) Wikipedia source
Religious feast days
- Caradoc Wikipedia source
- Ida of Louvain Wikipedia source
- Pope Martin I Wikipedia source
- Margaret of Castello Wikipedia source
- Sabás Reyes Salazar Wikipedia source
- April 13 (Eastern Orthodox liturgics) Wikipedia source
International
- World Quantum Day Wikipedia source
National and local
- Ambedkar Jayanti (India) Wikipedia source
- Bengali New Year (Bangladesh) Wikipedia source
- Black Day (South Korea) Wikipedia source
- Burt Gummer Day Wikipedia source
- Cake and Cunnilingus Day Wikipedia source
- Commemoration of Anfal Genocide Against the Kurds (Iraqi Kurdistan) Wikipedia source
- Day of Mologa (Yaroslavl Oblast, Russia) Wikipedia source
- Day of the Georgian language (Georgia) Wikipedia source
- Dhivehi Language Day (Maldives) Wikipedia source
- N'Ko Alphabet Day (Mande speakers) Wikipedia source
- Pan American Day (several countries in the Americas) Wikipedia source
- Takayama Spring Festival begins (Takayama, Gifu Prefecture, Japan) Wikipedia source
- Vaisakhi (Since 2011) Wikipedia source
- Youth Day (Angola) Wikipedia source
Religious feast days
- Anthony, John, and Eustathius Wikipedia source
- Bénézet Wikipedia source
- Henry Beard Delany (U.S. Episcopal Church) Wikipedia source
- Domnina of Terni Wikipedia source
- Lidwina Wikipedia source
- Peter González Wikipedia source
- Tiburtius, Valerian, and Maximus Wikipedia source
- April 14 (Eastern Orthodox liturgics) Wikipedia source
International
- Universal Day of Culture Wikipedia source
National and local
- Day of the Sun (North Korea) Wikipedia source
- Father Damien Day (Hawaii) Wikipedia source
- Hillsborough Disaster Memorial (Liverpool, England) Wikipedia source
- Jackie Robinson Day (United States) Wikipedia source
- National American Sign Language Day (United States) Wikipedia source
- Pohela Boishakh (Bengali New Year; India) Wikipedia source
- Tax Day, the official deadline for filing an individual tax return (or requesting an extension). (United States, Philippines) Wikipedia source
Religious feast days
- Abbo II of Metz Wikipedia source
- Blessed César de Bus Wikipedia source
- Father Damien (Catholic and Episcopal Church) Wikipedia source
- Hunna Wikipedia source
- Paternus of Avranches Wikipedia source
- April 15 (Eastern Orthodox liturgics) Wikipedia source
International
- World Voice Day Wikipedia source
National and local
- Birthday of José de Diego (Puerto Rico, United States) Wikipedia source
- Birthday of Queen Margrethe II (Denmark) Wikipedia source
- Flag Day (Jordan) Wikipedia source
- Emancipation Day (Washington, D.C., United States) Wikipedia source
- Memorial Day for the Victims of the Holocaust (Hungary) Wikipedia source
- National Healthcare Decisions Day (United States) Wikipedia source
- Remembrance of Chemical Attack on Balisan and Sheikh Wasan (Iraqi Kurdistan) Wikipedia source
Religious feast days
- Benedict Joseph Labre Wikipedia source
- Bernadette Soubirous Wikipedia source
- Drogo Wikipedia source
- Engratia Wikipedia source
- Fructuosus of Braga Wikipedia source
- Isabella Gilmore (Church of England) Wikipedia source
- Martyrs of Zaragoza Wikipedia source
- Molly Brant (Konwatsijayenni) (Anglican Church of Canada, Episcopal Church) Wikipedia source
- Turibius of Astorga Wikipedia source
- April 16 (Eastern Orthodox liturgics) Wikipedia source
International
- Malbec World Day Wikipedia source
- World Hemophilia Day Wikipedia source
National and local
- Evacuation Day (Syria), celebrates the recognition of the independence of Syria from France in 1946 Wikipedia source
- FAO Day (Iraq) Wikipedia source
- Flag Day (American Samoa) Wikipedia source
- Women's Day (Gabon) Wikipedia source
Religious feast days
- Donnán of Eigg Wikipedia source
- Henry Heath Wikipedia source
- Kateri Tekakwitha (Canada) Wikipedia source
- Robert of Molesme Wikipedia source
- Shemon bar Sabbae Wikipedia source
- April 17 (Eastern Orthodox liturgics) Wikipedia source
International
- International Day For Monuments and Sites Wikipedia source
- World Amateur Radio Day Wikipedia source
National and local
- Army Day (Iran) Wikipedia source
- Coma Patients' Day (Poland) Wikipedia source
- Friend's Day (Brazil) Wikipedia source
- Independence Day (Zimbabwe) Wikipedia source
- Invention Day (Japan) Wikipedia source
- Victory over the Teutonic Knights in the Battle of the Ice (Russia; Julian Calendar) Wikipedia source
Religious feast days
- Anthusa of Constantinople Wikipedia source
- Cyril VI of Constantinople (Eastern Orthodox Church) Wikipedia source
- Eleutherius and Antia Wikipedia source
- Galdino della Sala Wikipedia source
- Blessed Marie of the Incarnation Wikipedia source
- Molaise of Leighlin Wikipedia source
- Perfectus Wikipedia source
- Blessed Savina Petrilli Wikipedia source
- April 18 (Eastern Orthodox liturgics) Wikipedia source
Religious feast days
- Ælfheah of Canterbury (Anglican, Catholic, Orthodox) Wikipedia source
- Conrad of Ascoli Wikipedia source
- Emma of Lesum Wikipedia source
- Expeditus Wikipedia source
- George of Antioch Wikipedia source
- Olaus and Laurentius Petri (Lutheran) Wikipedia source
- Pope Leo IX Wikipedia source
- Ursmar Wikipedia source
- April 19 (Eastern Orthodox liturgics) Wikipedia source
International
- UN Chinese Language Day (United Nations) Wikipedia source
National and local
- 420 (cannabis culture) Wikipedia source
- Evacuee Flag Day (Finland) Wikipedia source
Religious feast days
- Agnes of Montepulciano Wikipedia source
- Pope Anicetus Wikipedia source
- Blessed Anastazy Jakub Pankiewicz Wikipedia source
- Beuno Wikipedia source
- Blessed James Bell and John Finch Wikipedia source
- Johannes Bugenhagen (Lutheran) Wikipedia source
- Marcellinus of Gaul Wikipedia source
- Blessed Muiris Mac Ionrachtaigh Wikipedia source
- Theotimos Wikipedia source
- April 20 (Eastern Orthodox liturgics) Wikipedia source
National and local
- Natale di Roma (Rome) Wikipedia source
- Parilia (ancient Rome) Wikipedia source
- Civil Service Day (India) Wikipedia source
- Grounation Day (Rastafari) Wikipedia source
- National Tea Day (United Kingdom) Wikipedia source
- National Tree Planting Day (Kenya) Wikipedia source
- San Jacinto Day (Texas) Wikipedia source
Religious feast days
- Abdecalas Wikipedia source
- Anastasius Sinaita Wikipedia source
- Anselm of Canterbury Wikipedia source
- Conrad of Parzham Wikipedia source
- Holy Infant of Good Health Wikipedia source
- Máel Ruba Wikipedia source
- Shemon Bar Sabbae Wikipedia source
- Wolbodo Wikipedia source
- April 21 (Eastern Orthodox liturgics) Wikipedia source
International
- Earth Day (International observance) and its related observance: International Mother Earth Day Wikipedia source
National and local
- Discovery Day (Brazil) Wikipedia source
- Holocaust Remembrance Day (Serbia) Wikipedia source
- From 2018 onwards, a national day of commemoration for the murdered teenager Stephen Lawrence (United Kingdom) Wikipedia source
Religious feast days
- Acepsimas of Hnaita and companions (Catholic Church) Wikipedia source
- Arwald Wikipedia source
- Epipodius and Alexander Wikipedia source
- Hudson Stuck (Episcopal Church) Wikipedia source
- John Muir (Episcopal Church) Wikipedia source
- Opportuna of Montreuil Wikipedia source
- Pope Caius Wikipedia source
- Pope Soter Wikipedia source
- St Senorina Wikipedia source
- Theodore of Sykeon Wikipedia source
- April 22 (Eastern Orthodox liturgics) Wikipedia source
International
- World Book Day Wikipedia source
- UN English Language Day (United Nations) Wikipedia source
- UN Spanish Language Day (United Nations) Wikipedia source
National and local
- Canada Book Day (Canada) Wikipedia source
- Castile and León Day (Castile and León) Wikipedia source
- Khongjom Day (Manipur) Wikipedia source
- National Sovereignty and Children's Day (Turkey and Northern Cyprus) Wikipedia source
- Navy Day (China) Wikipedia source
Religious feast days
- Adalbert of Prague Wikipedia source
- Felix, Fortunatus, and Achilleus Wikipedia source
- Saint George Wikipedia source
- Blessed Giles of Assisi Wikipedia source
- Gerard of Toul Wikipedia source
- Ibar of Beggerin (Meath) Wikipedia source
- Blessed Maria Gabriella Sagheddu Wikipedia source
- Toyohiko Kagawa (Episcopal and Lutheran Church) Wikipedia source
- Saint George's Day and its related observances: Saint George's Day (Catalonia) Wikipedia source
- Saint George's Day and its related observances: Saint George's Day (England) Wikipedia source
- Blessed Teresa Maria Manetti Wikipedia source
- April 23 (Eastern Orthodox liturgics) Wikipedia source
International
- World Day for Laboratory Animals Wikipedia source
National and local
- Armenian Genocide Remembrance Day (Armenia, California, France) Wikipedia source
- Concord Day (Niger) Wikipedia source
- Democracy Day (Nepal) Wikipedia source
- Fashion Revolution Day, and its related observances: Labour Safety Day (Bangladesh, proposed) Wikipedia source
- National Panchayati Raj Day (India) Wikipedia source
- Republic Day (The Gambia) Wikipedia source
Religious feast days
- Benedict Menni Wikipedia source
- Dermot of Armagh Wikipedia source
- Dyfnan of Anglesey Wikipedia source
- Ecgberht of Ripon Wikipedia source
- Elizabeth Hesselblad Wikipedia source
- Fidelis of Sigmaringen Wikipedia source
- Gregory of Elvira Wikipedia source
- Ivo of Ramsey Wikipedia source
- Johann Walter (Lutheran) Wikipedia source
- Mary of Clopas Wikipedia source
- Mary Euphrasia Pelletier Wikipedia source
- Mellitus Wikipedia source
- Salome (disciple) Wikipedia source
- Wilfrid (Catholic Church and Church of England) Wikipedia source
- William Firmatus Wikipedia source
- April 24 (Eastern Orthodox liturgics) Wikipedia source
International
- World Malaria Day Wikipedia source
National and local
- Anzac Day (Australia, New Zealand, Tonga) Wikipedia source
- Freedom Day (Portugal) Wikipedia source
- Liberation Day (Italy) Wikipedia source
- Military Foundation Day (North Korea) Wikipedia source
Religious feast days
- Mark the Evangelist Wikipedia source
- Franca Visalta Wikipedia source
- Giovanni Battista Piamarta Wikipedia source
- Major Rogation (Western Christianity) Wikipedia source
- Maughold Wikipedia source
- Peter of Saint Joseph de Betancur Wikipedia source
- Philo and Agathopodes Wikipedia source
- Anianus of Alexandria Wikipedia source
- Blessed Robert Anderton Wikipedia source
- April 25 (Eastern Orthodox liturgics) Wikipedia source
International
- World Intellectual Property Day Wikipedia source
National and local
- Chernobyl disaster related observances: Day of Remembrance of the Chernobyl tragedy (Belarus) Wikipedia source
- Chernobyl disaster related observances: Memorial Day of Radiation Accidents and Catastrophes (Russia) Wikipedia source
- Confederate Memorial Day (Florida, United States) Wikipedia source
- Union Day (Tanzania) Wikipedia source
Religious feast days
- Aldobrandesca (or Alda) Wikipedia source
- Lucidius of Verona Wikipedia source
- Our Lady of Good Counsel Wikipedia source
- Pope Anacletus and Marcellinus Wikipedia source
- Rafael Arnáiz Barón Wikipedia source
- Riquier Wikipedia source
- Paschasius Radbertus Wikipedia source
- Robert Hunt (Episcopal Church (USA)) Wikipedia source
- Blessed Stanisław Kubista Wikipedia source
- Stephen of Perm, see also Old Permic Alphabet Day Wikipedia source
- Trudpert Wikipedia source
- April 26 (Eastern Orthodox liturgics) Wikipedia source
National and local
- Day of Russian Parliamentarism (Russia) Wikipedia source
- Day of the Uprising Against the Occupying Forces (Slovenia) Wikipedia source
- Flag Day (Moldova) Wikipedia source
- Freedom Day (South Africa) Wikipedia source
- Independence Day, celebrates the independence of Sierra Leone from United Kingdom in 1961 Wikipedia source
- Independence Day, celebrates the independence of Togo from France in 1960 Wikipedia source
- King's Day (Netherlands, Aruba, Curaçao, Sint Maarten) (celebrated on April 26 if April 27 falls on a Sunday) Wikipedia source
- National Veterans' Day (Finland) Wikipedia source
Religious feast days
- Christian feast days: Assicus Wikipedia source
- Christian feast days: Floribert of Liège Wikipedia source
- Christian feast days: John of Constantinople Wikipedia source
- Christian feast days: Liberalis of Treviso Wikipedia source
- Christian feast days: Blessed María Antonia Bandrés Elósegui Wikipedia source
- Christian feast days: Blessed Osanna of Cattaro Wikipedia source
- Christian feast days: Pedro Armengol Wikipedia source
- Christian feast days: Pollio Wikipedia source
- Christian feast days: Virgin of Montserrat, co-patroness of Catalonia Wikipedia source
- Christian feast days: Zita Wikipedia source
- Christian feast days: Origen Adamantius Wikipedia source
- Christian feast days: April 27 (Eastern Orthodox liturgics) Wikipedia source
International
- Workers' Memorial Day and World Day for Safety and Health at Work (international) National Day of Mourning (Canada) Wikipedia source
National and local
- Mujahideen Victory Day (Afghanistan) Wikipedia source
- National Heroes Day (Barbados) Wikipedia source
- Restoration of Sovereignty Day (Japan) Wikipedia source
- Sardinia Day (Sardinia) Wikipedia source
- Ed Balls Day Wikipedia source
Religious feast days
- Aphrodisius and companions Wikipedia source
- Gianna Beretta Molla Wikipedia source
- Kirill of Turov (Orthodox, added to Roman Martyrology in 1969) Wikipedia source
- Louis de Montfort Wikipedia source
- Blessed Marie Louise Trichet Wikipedia source
- Pamphilus of Sulmona Wikipedia source
- Peter Chanel Wikipedia source
- Vitalis and Valeria of Milan Wikipedia source
- April 28 (Eastern Orthodox liturgics) Wikipedia source
International
- International Jazz Day (UNESCO) Wikipedia source
National and local
- Armed Forces Day (Georgia) Wikipedia source
- Camarón Day (French Foreign Legion) Wikipedia source
- Children's Day (Mexico) Wikipedia source
- Consumer Protection Day (Thailand) Wikipedia source
- Honesty Day (United States) Wikipedia source
- Martyrs' Day (Pakistan) Wikipedia source
- May Eve, the eve of the first day of summer in the Northern hemisphere (see May 1): Beltane begins at sunset in the Northern hemisphere, Samhain begins at sunset in the Southern hemisphere. (Neo-Druidic Wheel of the Year) Wikipedia source
- May Eve, the eve of the first day of summer in the Northern hemisphere (see May 1): Walpurgis Night (Central and Northern Europe) Wikipedia source
- National Persian Gulf Day (Iran) Wikipedia source
- Reunification Day (Vietnam) Wikipedia source
- Rincon Day (Bonaire) Wikipedia source
- Russian State Fire Service Day (Russia) Wikipedia source
- Teachers' Day (Paraguay) Wikipedia source
Religious feast days
- Adjutor Wikipedia source
- Aimo Wikipedia source
- Amator, Peter and Louis Wikipedia source
- Donatus of Evorea Wikipedia source
- Eutropius of Saintes Wikipedia source
- Marie Guyart (Anglican Church of Canada and Catholic Church) Wikipedia source
- Maximus of Rome Wikipedia source
- Blessed Miles Gerard Wikipedia source
- Pomponius of Naples Wikipedia source
- Pope Pius V Wikipedia source
- Quirinus of Neuss Wikipedia source
- Sarah Josepha Hale (Episcopal Church) Wikipedia source
- Suitbert the Younger Wikipedia source
- April 30 (Eastern Orthodox liturgics) Wikipedia source