At a Glance
May 15
Observances & Celebrations
Commemorative holidays, national days, religious feasts, and international traditions observed on this date.
Flag observance
Independence Day (Paraguay), celebrates the independence of Paraguay from Spain in 1811. Celebrations for the anniversary of the independence begin on Flag Day, May 14.
Religious observance
Feast of Achillius of Larissa
Religious observance
Feast of Athanasius of Alexandria (Coptic Church)
Religious observance
Feast of Hallvard Vebjørnsson (Roman Catholic Church)
Italy
Religious observance
Feast of Hilary of Galeata
Religious observance
Feast of Isidore the Laborer, celebrated with festivals in various countries, the beginning of bullfighting season in Madrid.
Religious observance
Feast of Jean-Baptiste de La Salle (Roman Catholic Church)
Italy
Religious observance
Feast of Kaleb of Axum
Religious observance
Feast of May 15 (Eastern Orthodox liturgical calendar)
Religious observance
Feast of Peter, Andrew, Paul, and Denise (Roman Catholic Church)
Italy
Religious observance
Feast of Reticius (Roman Catholic Church)
Italy
Religious observance
Feast of Sophia of Rome (Roman Catholic church)
Italy
Observance
Aoi Matsuri (Kyoto)
Observance
Army Day (Slovenia)
Observance
Constituent Assembly Day (Lithuania)
Lithuania
Observance