At a scientific conference in Washington, D.C., this day in 2001, scientists described an observation of energy flares that provided strong evidence of the theorized black hole at the centre of the Milky Way Galaxy.
| 1975: | | Lynette (“Squeaky”) Fromme attempted to assassinate U.S. President Gerald R. Ford. |
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| 1972: | | Palestinian terrorists attacked the Olympic Village in Munich, West Germany, during the Summer Olympic Games, taking hostage and eventually killing 11 members of the Israeli team. |
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| 1882: | | The first Labor Day parade was held in New York City in honour of the American worker. |
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| 1836: | | Sam Houston was elected president of the Republic of Texas. |
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| 1774: | | | Caspar David Friedrich, a pioneering early 19th-century German Romantic painter, was born. |
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| 1725: | | Marie Leszczy┰ska of Poland was married to King Louis XV of France. |
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