The temperature on December 4, 1921 was between -11.5 °C and -1.9 °C and averaged -7.8 °C. There was 6.4 hours of sunshine (80%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. 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 » Constituent Assembly of the Democratic Republic of Georgia adopts the country's first constitution.
July 23 » The Communist Party of China (CPC) is established at the founding National Congress.
July 27 » Researchers at the University of Toronto, led by biochemist Frederick Banting, prove that the hormone insulin regulates blood sugar.
September 7 » In Atlantic City, New Jersey, the first Miss America Pageant, a two-day event, is held.
September 7 » The Legion of Mary, the largest apostolic organization of lay people in the Catholic Church, is founded in Dublin, Ireland.
October 13 » Soviet republics sign the Treaty of Kars to formalize the borders between Turkey and the South Caucasus states.
Day of marriage December 9, 1939
The temperature on December 9, 1939 was between 3.6 °C and 9.1 °C and averaged 6.7 °C. There was 4.2 mm of rain during 3.8 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
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.
April 30 » NBC inaugurates its regularly scheduled television service in New York City, broadcasting President Franklin D. Roosevelt's N.Y. World's Fair opening day ceremonial address.
September 18 » World War II: The Polish government of Ignacy Mościcki flees to Romania.
October 6 » World War II: The Battle of Kock is the final combat of the September Campaign in Poland.
December 2 » New York City's LaGuardia Airport opens.
December 13 » World War II: Battle of the River Plate: Captain Hans Langsdorff of the German Deutschland-class cruiser (pocket battleship) Admiral Graf Spee engages with Royal Navy cruisers HMSExeter, HMSAjax and HMSAchilles.
December 24 » World War II: Pope Pius XII makes a Christmas Eve appeal for peace.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I15519.php : accessed March 1, 2026), "William Henry Kelderman (1921-1970)".
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