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Holidays and observances

May

Holidays and observances on May 15

23 holidays and special days are celebrated on May 15 around the world.

Holidays and observances

Frequently asked questions

What is celebrated on May 15?

23 observances are celebrated on May 15 around the world: Aoi Matsuri (Kyoto), Army Day (Slovenia), Christian feast day: Achillius of Larissa, Christian feast day: Athanasius of Alexandria (Coptic Church), Christian feast day: Hallvard Vebjørnsson (Roman Catholic Church), Christian feast day: Hilary of Galeata. 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.

What happened on May 15?

56 documented historical events happened on May 15, from antiquity to the present day. The best known is this: Roman emperor Valentinian II (pictured) was found hanged in his residence in Vienne, in present-day France. On the same day, in another year: Pope Innocent IV issued the papal bull Ad extirpanda, authorizing the use of torture on heretics during the Medieval Inquisition. 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.

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