The temperature on April 21, 1921 was between 2.2 °C and 11.1 °C and averaged 6.7 °C. There was 0.6 mm of rain. There was 2.5 hours of sunshine (18%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. 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 9 » Greco-Turkish War: The First Battle of İnönü, the first battle of the war, begins near Eskişehir in Anatolia.
January 20 » The British K-class submarine HMS K5 sinks in the English Channel; all 56 on board die.
February 21 » Rezā Shāh takes control of Tehran during a successful coup.
June 15 » Bessie Coleman earns her pilot's license, becoming the first female pilot of African-American descent.
July 27 » Researchers at the University of Toronto, led by biochemist Frederick Banting, prove that the hormone insulin regulates blood sugar.
August 3 » Major League Baseball Commissioner Kenesaw Mountain Landis confirms the ban of the eight Chicago Black Sox, the day after they were acquitted by a Chicago court.
When copying data from this family tree, please include a reference to the origin: P. Heres, "Family tree Eilander", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eilander/I1099519697.php : accessed February 21, 2026), "Albert van Ittersum (1896-????)".
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