The temperature on March 21, 1921 was between -2.7 °C and 10.7 °C and averaged 3.8 °C. There was 0.1 mm of rain. There was 8.5 hours of sunshine (70%). The average windspeed was 2 Bft (weak wind) 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.
February 21 » Rezā Shāh takes control of Tehran during a successful coup.
February 27 » The International Working Union of Socialist Parties is founded in Vienna.
March 18 » The second Peace of Riga is signed between Poland and the Soviet Union.
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.
October 13 » Soviet republics sign the Treaty of Kars to formalize the borders between Turkey and the South Caucasus states.
October 21 » President Warren G. Harding delivers the first speech by a sitting U.S. President against lynching in the deep South.
Day of death September 30, 1942
The temperature on September 30, 1942 was between 11.2 °C and 20.2 °C and averaged 15.2 °C. There was 0.3 mm of rain during 0.3 hours. There was 0.9 hours of sunshine (8%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
February 28 » The heavy cruiser USSHouston is sunk in the Battle of Sunda Strait with 693 crew members killed, along with HMASPerth which lost 375 men.
March 5 » World War II: Japanese forces capture Batavia, capital of Dutch East Indies, which is left undefended after the withdrawal of the KNIL garrison and Australian Blackforce battalion to Buitenzorg and Bandung.
June 21 » World War II: Tobruk falls to Italian and German forces.
September 3 » World War II: In response to news of its coming liquidation, Dov Lopatyn leads an uprising in the Ghetto of Lakhva (present-day Belarus).
November 19 » Mutesa II is crowned the 35th and last Kabaka (king) of Buganda, prior to the restoration of the kingdom in 1993.
November 27 » World War II: At Toulon, the French navy scuttles its ships and submarines to keep them out of Nazi hands.
When copying data from this family tree, please include a reference to the origin: Roelf Schrik, "Family tree Keizer", database, Genealogy Online (https://www.genealogieonline.nl/keizer-stamboom/I480.php : accessed February 13, 2026), "Johan Calff (1921-1942)".
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