The temperature on April 21, 1920 was between 1.7 °C and 9.9 °C and averaged 7.2 °C. There was 3.9 mm of rain. There was 1.5 hours of sunshine (11%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-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 13 » The Reichstag Bloodbath of January 13, 1920, the bloodiest demonstration in German history.
March 14 » In the second of the 1920 Schleswig plebiscites, about 80% of the population in Zone II votes to remain part of Weimar Germany.
April 25 » At the San Remo conference, the principal Allied Powers of World War I adopt a resolution to determine the allocation of Class "A" League of Nations mandates for administration of the former Ottoman-ruled lands of the Middle East.
August 16 » The congress of the Communist Party of Bukhara opens. The congress would call for armed revolution.
September 7 » Two newly purchased Savoia flying boats crash in the Swiss Alps en route to Finland where they would serve with the Finnish Air Force, killing both crews.
November 12 » Italy and the Kingdom of Serbs, Croats and Slovenes sign the Treaty of Rapallo.
When copying data from this family tree, please include a reference to the origin: Hans Pruckmuller, "Family tree Van Willigen", database, Genealogy Online (https://www.genealogieonline.nl/van-willigen-stamboom/I11010.php : accessed January 23, 2026), "Hendrika Willemsen (1902-)".
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