The temperature on April 14, 1940 was between 3.3 °C and 9.9 °C and averaged 6.9 °C. There was 1.5 mm of rain during 1.3 hours. There was 0.6 hours of sunshine (4%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
February 16 » World War II: Altmark incident: The German tanker Altmark is boarded by sailors from the British destroyer HMSCossack. 299 British prisoners are freed.
April 7 » Booker T. Washington becomes the first African American to be depicted on a United States postage stamp.
May 13 » Queen Wilhelmina of the Netherlands flees her country to Great Britain after the German invasion. Princess Juliana takes her children to Canada for their safety.
June 16 » World War II: Marshal Henri Philippe Pétain becomes Chief of State of Vichy France (Chef de l'État Français).
June 18 » Appeal of 18 June by Charles de Gaulle.
June 28 » Romania cedes Bessarabia (current-day Moldova) to the Soviet Union after facing an ultimatum.
Day of death April 9, 1943
The temperature on April 9, 1943 was between 4.6 °C and 12.7 °C and averaged 8.7 °C. There was 0.5 mm of rain during 1.0 hours. There was 6.8 hours of sunshine (50%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northwest. 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.
March 6 » Norman Rockwell published Freedom from Want in The Saturday Evening Post with a matching essay by Carlos Bulosan as part of the Four Freedoms series.
March 6 » World War II: The Battle of Fardykambos, one of the first major battles between the Greek Resistance and the occupying Royal Italian Army, ends with the surrender of an entire Italian battalion, the bulk of the garrison of the town of Grevena, leading to its liberation a fortnight later.
April 16 » Albert Hofmann accidentally discovers the hallucinogenic effects of the research drug LSD. He intentionally takes the drug three days later on April 19.
June 25 » The left-wing German Jewish exile Arthur Goldstein is murdered in Auschwitz.
July 4 » World War II: The Battle of Kursk, the largest full-scale battle in history and the world's largest tank battle, begins in the village of Prokhorovka.
December 17 » All Chinese are again permitted to become citizens of the United States upon the repeal of the Act of 1882 and the introduction of the Magnuson Act.
When copying data from this family tree, please include a reference to the origin: Van Knippenberg, "Family tree Van Knippenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-knippenberg/I1315.php : accessed February 16, 2026), "Hubertus Johannes Joseph Knippenberg (1940-1943)".
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