The temperature on November 4, 1921 was between 6.0 °C and 12.7 °C and averaged 10.2 °C. There was 2.5 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the 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.
February 27 » The International Working Union of Socialist Parties is founded in Vienna.
March 20 » The Upper Silesia plebiscite was a plebiscite mandated by the Versailles Treaty to determine a section of the border between Weimar Germany and Poland.
March 31 » The Royal Australian Air Force is formed.
July 27 » Researchers at the University of Toronto, led by biochemist Frederick Banting, prove that the hormone insulin regulates blood sugar.
September 21 » A storage silo in Oppau, Germany, explodes, killing 500–600 people.
October 13 » Soviet republics sign the Treaty of Kars to formalize the borders between Turkey and the South Caucasus states.
When copying data from this family tree, please include a reference to the origin: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I23464.php : accessed May 11, 2025), "Johanna Katharina van Herwijnen (1921-)".
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