The temperature on May 27, 1921 was between 8.9 °C and 18.5 °C and averaged 13.8 °C. There was 0.1 mm of rain. There was 2.5 hours of sunshine (15%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 16 » The Marxist Left in Slovakia and the Transcarpathian Ukraine holds its founding congress in Ľubochňa.
February 21 » Constituent Assembly of the Democratic Republic of Georgia adopts the country's first constitution.
June 30 » U.S. President Warren G. Harding appoints former President William Howard Taft as Chief Justice of the United States.
July 11 » Former president of the United States William Howard Taft is sworn in as 10th chief justice of the U.S. Supreme Court, becoming the only person ever to hold both offices.
July 11 » The Red Army captures Mongolia from the White Army and establishes the Mongolian People's Republic.
October 18 » The Crimean Autonomous Soviet Socialist Republic is formed as part of the Russian Soviet Federative Socialist Republic.
Day of marriage June 11, 1947
The temperature on June 11, 1947 was between 7.6 °C and 17.9 °C and averaged 13.3 °C. There was 2.1 hours of sunshine (13%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
March 25 » An explosion in a coal mine in Centralia, Illinois kills 111.
June 5 » Cold War: Marshall Plan: In a speech at Harvard University, the United States Secretary of State George Marshall calls for economic aid to war-torn Europe.
August 2 » A British South American Airways Avro Lancastrian airliner crashes into a mountain during a flight from Buenos Aires, Argentina to Santiago, Chile. The wreckage would not be found until 1998.
September 18 » The National Security Council and the Central Intelligence Agency are established in the United States by the National Security Act. It also establishes the Air Force as an equal partner of the Army and Navy.
November 17 » American scientists John Bardeen and Walter Houser Brattain observe the basic principles of the transistor, a key element for the electronics revolution of the 20th century.
November 25 » New Zealand ratifies the Statute of Westminster and thus becomes independent of legislative control by the United Kingdom.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I165826.php : accessed October 25, 2026), "Johanna Koop (1921-2020)".
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