Worldpedia:Selected anniversaries/March 13
- 874 - The bones of Saint Nicephorus were interred in Constantinople.
- 1639 - New College in Cambridge, Massachusetts was renamed Harvard College, after its first principal donor, John Harvard.
- 1781 - William Herschel discovered the planet Uranus.
- 1881 - Tsar Alexander II of Russia was killed in a Nihilist bombing.
- 1954 - The Battle of Dien Bien Phu, the last battle of the Indochina War, began.