| Year | Description | Category |
|---|---|---|
| 1999 | Chinese multinational conglomerate Alibaba was founded. | Foundation day |
| 1992 | Chess grandmaster from United States, Samuel Reshevsky died. | Death day |
| 1983 | Chess grandmaster from Ukraine, Alexander Zubov was born. | Birthday |
| 1981 | Chess grandmaster from Argentina, Rubén Felgaer was born. | Birthday |
| 1979 | Pakistani politician Zulfikar Ali Bhutto died. | Death day |
| 1979 | Australian actor Heath Ledger was born. | Birthday |
| 1977 | Southern Airways Flight 242 aircraft incident at New Hope, Georgia, US, killed 72 people. | Man-Made Disaster |
| 1975 | US Air Force (68-0218) aircraft incident at Saigon, South Vietnam, killed 138 people. | Man-Made Disaster |
| 1975 | American multinational technology company Microsoft was founded. | Foundation day |
| 1974 | Wenela Air Services (A2-ZER) aircraft incident at Francistown, Botswana, killed 78 people. | Man-Made Disaster |
| 1968 | American Baptist minister and activist Martin Luther King, Jr. died. | Death day |
| 1964 | Astronaut from Japan, Satoshi Furukawa was born. | Birthday |
| 1963 | Aeroflot Flight 25 aircraft incident at Urakhcha, Rybno-Slobodsky District, Tatar ASSR, Russian SFSR, USSR, killed 67 people. | Man-Made Disaster |
| 1960 | Chess grandmaster from New Zealand, Murray Chandler was born. | Birthday |
| 1960 | Independence Day of Senegal. | National Holiday |
| 1959 | Chess grandmaster from Russia, Andrei Kharitonov was born. | Birthday |
| 1937 | Chess grandmaster from Hungary, Lajos Portisch was born. | Birthday |
| 1933 | USS Akron aircraft incident at Atlantic Ocean, off Barnegat Light, New Jersey, US, killed 73 people. | Man-Made Disaster |
| 1932 | German chemist Wilhelm Ostwald died. | Death day |
| 1929 | German automobile engineer and engine designer Karl Benz died. | Death day |
| 1923 | English mathematician John Venn died. | Death day |
| 1919 | British chemist and physicist William Crookes died. | Death day |
| 1905 | Golfer from United States, Tony Manero was born. | Birthday |
| 1887 | Bulgarian politician Mincho Neychev was born. | Birthday |
| 1841 | American politician William H. Harrison died. | Death Day |
| 1841 | American politician John Tyler took office as president. | Inagural Day |
| 1826 | Belgian electrical engineer Zenobe Gramme was born. | Birthday |
| 1823 | German-British engineer Sir William Siemens was born. | Birthday |
| 1821 | American mechanical engineer Linus Yale Jr. was born. | Birthday |
| 1617 | Scottish mathematician and physicist John Napier died. | Death day |
2019-04-04