The temperature on February 11, 1961 was between 6.4 °C and 10.9 °C and averaged 8.5 °C. There was 4.4 mm of rain during 3.8 hours. There was 0.6 hours of sunshine (6%). The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
April 17 » Bay of Pigs Invasion: A group of Cuban exiles financed and trained by the CIA lands at the Bay of Pigs in Cuba with the aim of ousting Fidel Castro.
July 25 » Cold War: In a speech John F. Kennedy emphasizes that any attack on Berlin is an attack on NATO.
August 13 » Cold War: East Germany closes the border between the eastern and western sectors of Berlin to thwart its inhabitants' attempts to escape to the West, and construction of the Berlin Wall is started.
September 12 » The African and Malagasy Union is founded.
November 18 » United States President John F. Kennedy sends 18,000 military advisors to South Vietnam.
December 19 » India annexes Daman and Diu, part of Portuguese India.
When copying data from this family tree, please include a reference to the origin: Steven Scheffer, "Genealogy Scheffer", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-scheffer/I491.php : accessed February 18, 2026), "Dora van der Zwan (1941-1961)".
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