| 1493 - Battle of Krbava field, a decisive defeat of Croats in Croatian struggle against the Ottoman Empire invasion. |
| 1513 - James IV of Scotland is defeated and dies in the Battle of Flodden Field, ending Scotland's involvement in the War of the League of Cambrai. |
| 1886 - The Berne Convention for the Protection of Literary and Artistic Works is finalized. |
| 1926 - The U.S. National Broadcasting Company formed. |
| 1947 - First actual case of a computer bug being found: a moth lodges in a relay of a Harvard Mark II computer at Harvard University. |
| 1991 - Tajikstan gains independence from the Soviet Union. |