| 1923 | Revolutionary leader Francisco Villa is assassinated in hidalgo del parral,Mexico. |
| 1940 | Denmark leaves the League of Nations. |
| 1951 | Jordan's King Abdullah is assassinated in Jerusalem by a Palestinian gunman. |
| 1960 | A Polaris missile was successfully test-launched from a submarine. |
| 1969 | US astronauts Neil Armstrong and Edwin `BUZZ' Aldrin take first walk on the moon. |
| 1997 | An IRA truce takes effect in Northern Ireland after 28 years of guerrilla war. |
| 2005 | Hurricane Emily slams into northeastern Mexico. |
| 2012 | A masked gunman opens fire at a crowded cinema and kills 12 people in Colorado. |
| 2015 | The UN security Council unanimously endorses the landmark nuclear deal between Iran and six world powers. |
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