| Year | Description | Category |
|---|---|---|
| 2019 | Egyptian politician Ibrahim Mahlab was born. | Birthday |
| 2013 | Chess grandmaster from United States, Robert Byrne died. | Death day |
| 1997 | American scientist George Wald died. | Death day |
| 1988 | Chess grandmaster from Greece, Ioannis Papadopoulos was born. | Birthday |
| 1987 | Chess grandmaster from Azerbaijan, Farhad Tahirov was born. | Birthday |
| 1985 | Chess grandmaster from Azerbaijan, Shakhriyar Mamedyarov was born. | Birthday |
| 1984 | Chess grandmaster from Poland, Kamil Mitoń was born. | Birthday |
| 1980 | Transbrasil Flight 303 aircraft incident at Morro da Virgínia, Santa Catarina, Brazil, killed 55 people. | Man-Made Disaster |
| 1978 | British musician Guy Berryman was born. | Birthday |
| 1973 | Chess grandmaster from France, Joël Lautier was born. | Birthday |
| 1971 | Soviet physicist Igor Tamm died. | Death day |
| 1961 | Chess grandmaster from Croatia, Nenad Ferčec was born. | Birthday |
| 1959 | Chess grandmaster from Latvia, Edvins Kengis was born. | Birthday |
| 1945 | American politician Franklin D. Roosevelt died. | Death Day |
| 1945 | American politician Harry S. Truman took office as president. | Inagural Day |
| 1937 | Astronaut from Soviet Union, Igor Volk was born. | Birthday |
| 1924 | French politician Raymond Barre was born. | Birthday |
| 1903 | Dutch economist Jan Tinbergen was born. | Birthday |
| 1902 | Dutch politician Louis Beel was born. | Birthday |
| 1894 | Portuguese politician Francisco Craveiro Lopes was born. | Birthday |
| 1888 | Swedish-Russian engineer Ludvig Nobel died. | Death day |
| 1884 | German physician Otto Fritz Meyerhof was born. | Birthday |
2019-04-12