The temperature on May 29, 1961 was between 1.5 °C and 12.8 °C and averaged 8.2 °C. There was 1.5 mm of rain during 2.0 hours. There was 8.7 hours of sunshine (53%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
January 9 » British authorities announce they have uncovered the Soviet Portland Spy Ring in London.
March 9 » Sputnik 9 successfully launches, carrying a dog and a human dummy, and demonstrating that the Soviet Union was ready to begin human spaceflight.
May 31 » In Moscow City Court, the Rokotov–Faibishenko show trial begins, despite the Khrushchev Thaw to reverse Stalinist elements in Soviet society.
June 23 » The Antarctic Treaty System, which sets aside Antarctica as a scientific preserve and limits military activity on the continent, its islands and ice shelves, comes into force.
December 2 » In a nationally broadcast speech, Cuban leader Fidel Castro declares that he is a Marxist–Leninist and that Cuba is going to adopt Communism.
December 31 » RTÉ, Ireland's state broadcaster, launches its first national television service.
When copying data from this family tree, please include a reference to the origin: Reind van der Laan, "Family tree van der Laan, Stamvader Evert Jans van Oterdum", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-der-laan-van-oterdum/I4635.php : accessed May 16, 2024), "Antoon Menze Zwerver (1961-)".
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