This Day in History
Today: March 28, 2026
37
Roman emperor Caligula accepts the titles of the Principate, bestowed on him by the Senate.[1]
193
After assassinating the Roman Emperor Pertinax, his Praetorian Guards auction off the throne to Didius Julianus.[2]
364
Roman Emperor Valentinian I appoints his brother Flavius Valens co-emperor.[3]
1065
The Great German Pilgrimage, which had been under attack by Bedouin bandits for three days, is rescued by the Fatimid governor of Ramla.[4]
1566
The foundation stone of Valletta, Malta's capital city, is laid[5] by Jean Parisot de Valette, Grand Master of the Sovereign Military Order of Malta.[6]
1776
Juan Bautista de Anza finds the site for the Presidio of San Francisco.[7]
1795
Partitions of Poland: The Duchy of Courland and Semigallia, a northern fief of the Polish–Lithuanian Commonwealth, ceases to exist and becomes part of Imperial Russia.[8]
1801
Treaty of Florence is signed, ending the war between the French Republic and the Kingdom of Naples.[9]
1802
Heinrich Wilhelm Matthäus Olbers discovers 2 Pallas, the second asteroid ever to be discovered.[10]
1809
Peninsular War: France defeats Spain in the Battle of Medellín.[11]
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