April 2 » "Electric Theatre", the first full-time movie theater in the United States, opens in Los Angeles.
April 20 » Pierre and Marie Curie refine radium chloride.
May 8 » In Martinique, Mount Pelée erupts, destroying the town of Saint-Pierre and killing over 30,000 people. Only a handful of residents survive the blast.
August 9 » Edward VII and Alexandra of Denmark are crowned King and Queen of the United Kingdom of Great Britain and Ireland.
November 21 » The Philadelphia Football Athletics defeated the Kanaweola Athletic Club of Elmira, New York, 39–0, in the first ever professional American football night game.
November 29 » The Pittsburgh Stars defeated the Philadelphia Athletics, 11–0 to win the first championship associated with an American national professional football league.
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.
January 17 » Alcohol Prohibition begins in the United States as the Volstead Act goes into effect.
April 15 » Two security guards are murdered during a robbery in South Braintree, Massachusetts. Anarchists Sacco and Vanzetti would be convicted of and executed for the crime, amid much controversy.
May 3 » A Bolshevik coup fails in the Democratic Republic of Georgia.
July 15 » The Polish Parliament establishes Silesian Voivodeship before the Polish-German plebiscite.
August 16 » The congress of the Communist Party of Bukhara opens. The congress would call for armed revolution.
November 2 » In the United States, KDKA of Pittsburgh starts broadcasting as the first commercial radio station. The first broadcast is the result of the 1920 United States presidential election.
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 18, 2026), "Jantje Boersma (1902-)".
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