Explore 2224 historical events from 0–9.
Saint Theodore of Sykeon, also known as Theodore the Sykeote, was a revered Byzantine ascetic, who lived between the first half of the 6th century and the thirteenth year of the Em…
Christian feast day: Theodore of Sykeon
April 21 - Eastern Orthodox liturgical calendar - April 23
Christian feast day: April 22 (Eastern Orthodox liturgics)
Discovery Day is the name of several holidays commemorating the discovery of land, gold, and other significant national discoveries.
Discovery Day (Brazil)
Earth Day is an annual event on April 22 to demonstrate support for environmental protection. First held on April 22, 1970, it now includes a wide range of events coordinated globa…
Earth Day (International observance) and its related observance: International Mother Earth Day
A Holocaust memorial day or Holocaust remembrance day is an annual observance to commemorate the victims of the Holocaust, the genocide of six million Jews and of millions of othe…
Holocaust Remembrance Day (Serbia)
Stephen Adrian Lawrence was an 18-year-old black British student from Woolwich, southeast London, England who was murdered in a racially motivated attack while waiting for a bus on…
From 2018 onwards, a national day of commemoration for the murdered teenager Stephen Lawrence (United Kingdom)
Adalbert of Prague, known in the Czech Republic, Poland and Slovakia by his birth name Vojtěch, was a Czech missionary and Christian saint. He was the Bishop of Prague and a missio…
Christian feast day: Adalbert of Prague
Felix, Fortunatus, and Achilleus were 3rd-century Christian saints who suffered martyrdom during the reign of Caracalla. Felix, a priest, Fortunatus and Achilleus, both deacons, we…
Christian feast day: Felix, Fortunatus, and Achilleus
Giles of Assisi, was one of the original companions of Francis of Assisi and holds a leading place among them. St. Francis called him "The Knight of our Round Table".
Christian feast day: Blessed Giles of Assisi
Gerard was a German prelate who served as the Bishop of Toul from 963 until his death. His entrance into the priesthood came about due to his mother being struck dead in a lightnin…
Christian feast day: Gerard of Toul
Saint George, also George of Lydda, was an early Christian martyr who is venerated as a saint in Christianity. According to holy tradition, he was a soldier in the Roman army. Of C…
Christian feast day: Saint George
Ibar mac Lugna, whose name is also given as Iberius or Ivor, was an early Irish saint, patron of Beggerin Island, and bishop. The saint is sometimes said to have been one of the "Q…
Christian feast day: Ibar of Beggerin (Meath)
Beatification is a recognition accorded by the Catholic Church of a deceased person's entrance into Heaven and capacity to intercede on behalf of individuals who pray in their name…
Christian feast day: Blessed Maria Gabriella Sagheddu
Toyohiko Kagawa was a Japanese Evangelical Christian pacifist, Christian reformer, and labour activist. Kagawa wrote, spoke, and worked at length on ways to employ Christian princ…
Christian feast day: Toyohiko Kagawa (Episcopal and Lutheran Church)
Saint George's Day, also known as the Day of Books and Roses, is celebrated annually in Catalonia (Spain) on 23 April. Saint George is the patron saint of Catalonia in a tradition …
Christian feast day: Saint George's Day and its related observances: Saint George's Day (Catalonia)
Beatification is a recognition accorded by the Catholic Church of a deceased person's entrance into Heaven and capacity to intercede on behalf of individuals who pray in their name…
Christian feast day: Blessed Teresa Maria Manetti
April 22 - Eastern Orthodox liturgical calendar - April 24
Christian feast day: April 23 (Eastern Orthodox liturgics)
Canada Book Day is a yearly event celebrated in Canada on April 23 to promote reading and books during Canada Book Week. Canada Book Week takes place on the week of April 23.
Canada Book Day (Canada)
Castile and León Day is a holiday celebrated on 23 April in the autonomous community of Castile and León, a subdivision of Spain. The date is the anniversary of the Battle of Villa…
Castile and León Day (Castile and León)
International Pixel-Stained Technopeasant Day is a commemoration declared by author Jo Walton, held on April 23 and first celebrated in 2007, in response to remarks made by Howard …
International Pixel-Stained Technopeasant Day
National Sovereignty and Children's Day is a public holiday in Turkey commemorating the foundation of the Grand National Assembly of Turkey, on 23 April 1920. It is also observed b…
National Sovereignty and Children's Day (Turkey and Northern Cyprus)
The Anglo-Manipur War or Manipuri Rebellion of 1891 was a short armed conflict between the British Colonial Forces and the brave royal princes of Manipur Kingdom, Manipur was an in…
Khongjom Day (Manipur)
Several nations observe or have observed a Navy Day to recognize their navy.
Navy Day (China)