The temperature on September 1, 1921 was between 6.3 °C and 21.8 °C and averaged 14.3 °C. There was 3.1 hours of sunshine (23%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south. 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 15 » Kingdom of Romania establishes its legation in Helsinki.
March 1 » Following mass protests in Petrograd demanding greater freedom in the RSFSR, the Kronstadt rebellion began, with sailors and citizens taking up arms against the Bolsheviks.
March 31 » The Royal Australian Air Force is formed.
May 31 » The Tulsa race massacre kills at least 39, but other estimates of black fatalities vary from 55 to about 300.
July 27 » Researchers at the University of Toronto, led by biochemist Frederick Banting, prove that the hormone insulin regulates blood sugar.
When copying data from this family tree, please include a reference to the origin: W. Kattenberg, "Family tree Kattenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kattenberg/R945.php : accessed January 24, 2026), "Cornelia Vrolijk (± 1901-)".
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