April 20 » U.S. President William McKinley signed a joint resolution to Congress for declaration of war against Spain, beginning the Spanish–American War.
August 13 » Carl Gustav Witt discovers 433 Eros, the first near-Earth asteroid to be found.
September 10 » Empress Elisabeth of Austria is assassinated by Luigi Lucheni.
September 18 » The Fashoda Incident triggers the last war scare between Britain and France.
September 21 » Empress Dowager Cixi seizes power and ends the Hundred Days' Reform in China.
December 26 » Marie and Pierre Curie announce the isolation of radium.
Day of marriage April 21, 1921
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.
February 25 » Georgian capital Tbilisi falls to the invading Russian forces after heavy fighting and the Russians declare the Georgian Soviet Socialist Republic.
March 31 » The Royal Australian Air Force is formed.
April 2 » The Autonomous Government of Khorasan, a military government encompassing the modern state of Iran, is established.
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.
August 28 » The Red Army dissolved the Free Territory, after driving the Black Army out of Ukraine.
Day of death October 11, 1982
The temperature on October 11, 1982 was between 8.3 °C and 12.4 °C and averaged 10.7 °C. There was 1.2 mm of rain during 3.7 hours. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
In The Netherlands , there was from Friday, September 11, 1981 to Saturday, May 29, 1982 the cabinet Van Agt II, with Mr. A.A.M. van Agt (CDA) as prime minister.
In The Netherlands , there was from Saturday, May 29, 1982 to Thursday, November 4, 1982 the cabinet Van Agt III, with Mr. A.A.M. van Agt (CDA) as prime minister.
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 30 » Richard Skrenta writes the first PC virus code, which is 400 lines long and disguised as an Apple boot program called "Elk Cloner".
March 5 » Soviet probe Venera 14 lands on Venus.
March 30 » Space Shuttle program: STS-3 mission is completed with the landing of Columbia at White Sands Missile Range, New Mexico.
June 10 » Lebanon War: The Syrian Arab Army defeats the Israeli Defense Forces in the Battle of Sultan Yacoub.
November 3 » The Salang Tunnel fire in Afghanistan by kills 150–2000 people.
December 6 » The Troubles: The Irish National Liberation Army bombs a pub frequented by British soldiers in Ballykelly, Northern Ireland, killing eleven soldiers and six civilians.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I102280.php : accessed February 12, 2026), "Anne Koop (1898-1982)".
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