The temperature on December 24, 1920 was between -0.5 °C and 10.8 °C and averaged 5.5 °C. There was 10.2 mm of rain. The average windspeed was 4 Bft (moderate breeze) 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.
January 16 » Zeta Phi Beta Sorority Incorporated was founded on the campus of Howard University.
January 17 » Alcohol Prohibition begins in the United States as the Volstead Act goes into effect.
February 29 » Czechoslovak National Assembly adopts the Constitution.
July 15 » The Polish Parliament establishes Silesian Voivodeship before the Polish-German plebiscite.
August 13 » Polish–Soviet War: The Battle of Warsaw begins and will last till August 25. The Red Army is defeated.
August 20 » The National Football League is organized as the American Professional Football Conference in Canton, Ohio
Day of death June 22, 1954
The temperature on June 22, 1954 was between 8.6 °C and 19.2 °C and averaged 15.1 °C. There was 3.6 hours of sunshine (21%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
January 20 » In the United States, the National Negro Network is established with 40 charter member radio stations.
April 8 » A Royal Canadian Air Force Canadair Harvard collides with a Trans-Canada Airlines Canadair North Star over Moose Jaw, Saskatchewan, killing 37 people.
April 25 » The first practical solar cell is publicly demonstrated by Bell Telephone Laboratories.
July 15 » First flight of the Boeing 367-80, prototype for both the Boeing 707 and C-135 series.
August 23 » First flight of the Lockheed C-130 multi-role aircraft.
November 30 » In Sylacauga, Alabama, United States, the Hodges meteorite crashes through a roof and hits a woman taking an afternoon nap; this is the only documented case in the Western Hemisphere of a human being hit by a rock from space.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I536714.php : accessed February 27, 2026), "Hermannus Johannes Knoops (± 1898-1954)".
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