What happened on April 30

54 documented historical events happened on April 30, from antiquity to the present day. The best known is this: The Diocletianic Persecution of Christians officially ended in the eastern Roman Empire. On the same day, in another year: Civil wars of the Tetrarchy: An outnumbered army led by Roman emperor Licinius defeated his rival Maximinus II's forces at the Battle of Tzirallum. On Almanaccolo every event is listed in chronological order, grouped by century, and links to the Wikipedia article it comes from, so you can always read further or check the source. Alongside the events you find who was born and who died on this date, and which observances are celebrated around the world.

160 people with a Wikipedia article were born on April 30, including Levi Celerio, Dorival Caymmi, Claude Shannon. The list spans every era and every field — art, science, politics, sport, entertainment — ordered by year of birth, from the earliest to the most recent. The six featured people are those most has been written about: the ordering uses the length of their Wikipedia article as an indicator of prominence. For each one you find their occupation, year of birth and a link to the full biography.

108 people with a Wikipedia article died on April 30, including Amalasuintha, Hildegard (queen), Eckard I of Meissen. The list is in chronological order by year of death and spans all of documented history, from antiquity to the present day. For each person you find their occupation, the year and a link to the Wikipedia biography, where the full story and its sources can be read.

28 observances are celebrated on April 30 around the world: Armed Forces Day (Georgia), Camarón Day (French Foreign Legion), Children's Day (Mexico), Christian feast day: Adjutor, Christian feast day: Aimo, Christian feast day: Amator, Peter and Louis. The list gathers national holidays, international days and religious or civil observances falling on this date in different countries, as recorded on Wikipedia. Some are fixed and recur on the same day every year; others depend on the local calendar. Each links to the article explaining its origin and meaning.