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.
March 31 » The Royal Australian Air Force is formed.
June 15 » Bessie Coleman earns her pilot's license, becoming the first female pilot of African-American descent.
July 22 » Rif War: The Spanish Army suffers its worst military defeat in modern times to the Berbers of the Rif region of Spanish Morocco.
October 18 » The Crimean Autonomous Soviet Socialist Republic is formed as part of the Russian Soviet Federative Socialist Republic.
October 21 » President Warren G. Harding delivers the first speech by a sitting U.S. President against lynching in the deep South.
October 29 » United States: Second trial of Sacco and Vanzetti in Boston, Massachusetts.
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
January 1 » The Canadian Citizenship Act 1946 comes into effect, converting British subjects into Canadian citizens. Prime Minister William Lyon Mackenzie King becomes the first Canadian citizen.
August 7 » Thor Heyerdahl's balsa wood raft, the Kon-Tiki, smashes into the reef at Raroia in the Tuamotu Islands after a 101-day, 7,000 kilometres (4,300mi) journey across the Pacific Ocean in an attempt to prove that pre-historic peoples could have traveled from South America.
August 15 » Founder of Pakistan, Muhammad Ali Jinnah is sworn in as first Governor-General of Pakistan in Karachi.
November 20 » The Princess Elizabeth marries Lieutenant Philip Mountbatten, who becomes the Duke of Edinburgh, at Westminster Abbey in London.
November 29 » First Indochina War: French forces carry out a massacre at Mỹ Trạch, Vietnam.
November 30 » Civil War in Mandatory Palestine begins, leading up to the creation of the state of Israel.
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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