| 1945 | UNESCO is founded. |
| 1965 | Venera program: The Soviet Union launches the Venera 3 space probe toward Venus, which will be the first spacecraft to reach the surface of another planet. |
| 1973 | Skylab program: NASA launches Skylab 4 with a crew of three astronauts from Cape Canaveral, Florida for an 84-day mission. |
| 1973 | U.S.
President Richard Nixon signs the Trans-Alaska Pipeline Authorization Act into law, authorizing the construction of the Alaska Pipeline. |
| 1974 | The Arecibo message is broadcast from Puerto Rico. |
| 1979 | The first line of Bucharest Metro (Line M1) is opened from Timpuri Noi to Semănătoarea in Bucharest, Romania. |
| 1988 | The Supreme Soviet of the Estonian Soviet Socialist Republic declares that Estonia is "sovereign" but stops short of declaring independence. |
| 1988 | In the first open election in more than a decade, voters in Pakistan elect populist candidate Benazir Bhutto to be Prime
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