| Year | Description | Category |
|---|---|---|
| 2002 | Swedish mechanical engineer and inventor Nils Bohlin died. | Death day |
| 1992 | Chess grandmaster from Ukraine, Mariya Muzychuk was born. | Birthday |
| 1991 | Independence Day of Armenia. | National Holiday |
| 1990 | Chess grandmaster from Soviet Union, Alexander Konstantinopolsky died. | Death day |
| 1988 | Chess grandmaster from Russia, Vasily Papin was born. | Birthday |
| 1985 | Chess grandmaster from Israel, Ilya Khmelniker was born. | Birthday |
| 1981 | Independence Day of Belize. | National Holiday |
| 1979 | West Indian cricketer Chris Gayle was born. | Birthday |
| 1974 | American actor Walter Brennan died. | Death day |
| 1971 | Argentine physiologist Bernardo Houssay died. | Death day |
| 1970 | Chess grandmaster from Croatia, Ivan Leventić was born. | Birthday |
| 1965 | Chess grandmaster from Croatia, Robert Zelčić was born. | Birthday |
| 1964 | Independence Day of Malta. | National Holiday |
| 1963 | West Indian cricketer Curtly Ambrose was born. | Birthday |
| 1961 | Golfer from United States, Ed Oliver died. | Death day |
| 1958 | American basketball player Rick Mahorn was born. | Birthday |
| 1957 | Australian politician Kevin Rudd was born. | Birthday |
| 1957 | American film director Ethan Coen was born. | Birthday |
| 1955 | Astronaut from United States, Richard Hieb was born. | Birthday |
| 1954 | Japanese politician Shinzo Abe was born. | Birthday |
| 1945 | Astronaut from Canada, Bjarni Tryggvason was born. | Birthday |
| 1936 | English inventor and businessman Frank Hornby died. | Death day |
| 1934 | British physicist David J. Thouless was born. | Birthday |
| 1930 | American chemist John Thompson Dorrance died. | Death day |
| 1926 | American physicist Donald A. Glaser was born. | Birthday |
| 1924 | American inventor Bernard Silver was born. | Birthday |
| 1895 | Spanish civil engineer and pilot Juan de la Cierva was born. | Birthday |
| 1866 | French bacteriologist Charles Nicolle was born. | Birthday |
| 1853 | Dutch physicist Heike Kamerlingh Onnes was born. | Birthday |
| 1801 | German and Russian engineer Moritz von Jacobi was born. | Birthday |
| 1676 | Papacy of Pope Innocent XI began. | Papacy began |
| 1576 | Italian polymath Gerolamo Cardano died. | Death day |
2018-09-21