| Year | Event |
| 1900 | Tonga became a British protectorate |
| 1909 | Gustav Mahler, the Austrian composer, died |
| 1910 | The first ever conference on air traffic opened in Paris |
| 1936 | The Spanish Civil broke out |
| 1944 | The Allies captured Monte Cassini, Italy |
| 1969 | The United States launched the Apollo 10 mission to the Moon |
| 1980 | Mt St. Helens, North America, erupted causing widespread damage |
| 1983 | Sri Lanka imposed a State of Emergency after election violence |
| 1990 | A treaty was signed, forming the basis for monetary union between East & West Germany |
