January 28 » The Carnegie Institution of Washington is founded in Washington, D.C. with a $10 million gift from Andrew Carnegie.
March 6 » Real Madrid CF is founded.
April 14 » James Cash Penney opens his first store in Kemmerer, Wyoming.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
August 9 » Edward VII and Alexandra of Denmark are crowned King and Queen of the United Kingdom of Great Britain and Ireland.
August 22 » Cadillac Motor Company is founded.
Day of marriage June 12, 1920
The temperature on June 12, 1920 was between 11.2 °C and 26.2 °C and averaged 19.2 °C. There was 12.7 hours of sunshine (76%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. 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.
April 25 » At the San Remo conference, the principal Allied Powers of World War I adopt a resolution to determine the allocation of Class "A" League of Nations mandates for administration of the former Ottoman-ruled lands of the Middle East.
May 2 » The first game of the Negro National League baseball is played in Indianapolis.
May 16 » In Rome, Pope Benedict XV canonizes Joan of Arc.
August 16 » Ray Chapman of the Cleveland Indians is hit on the head by a fastball thrown by Carl Mays of the New York Yankees, and dies early the next day. Chapman was the second player to die from injuries sustained in a Major League Baseball game, the first being Doc Powers in 1909.
September 7 » Two newly purchased Savoia flying boats crash in the Swiss Alps en route to Finland where they would serve with the Finnish Air Force, killing both crews.
November 7 » Patriarch Tikhon of Moscow issues a decree that leads to the formation of the Russian Orthodox Church Outside Russia.
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/I138559.php : accessed October 14, 2026), "Jantje Boersma (1902-)".
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