April 2 » "Electric Theatre", the first full-time movie theater in the United States, opens in Los Angeles.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
May 31 » Second Boer War: The Treaty of Vereeniging ends the war and ensures British control of South Africa.
June 28 » The U.S. Congress passes the Spooner Act, authorizing President Theodore Roosevelt to acquire rights from Colombia for the Panama Canal.
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.
Day of marriage April 14, 1921
The temperature on April 14, 1921 was between 2.9 °C and 9.4 °C and averaged 6.4 °C. There was 10.2 mm of rain. There was 4.6 hours of sunshine (33%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the west-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.
March 1 » The Australian cricket team captained by Warwick Armstrong becomes the first team to complete a whitewash of The Ashes, something that would not be repeated for 86 years.
March 18 » The second Peace of Riga is signed between Poland and the Soviet Union.
April 2 » The Autonomous Government of Khorasan, a military government encompassing the modern state of Iran, is established.
June 28 » Serbian King Alexander I proclaims the new constitution of the Kingdom of Serbs, Croats and Slovenes, known thereafter as the Vidovdan Constitution.
July 11 » Former president of the United States William Howard Taft is sworn in as 10th chief justice of the U.S. Supreme Court, becoming the only person ever to hold both offices.
December 22 » Opening of Visva-Bharati College, also known as Santiniketan College, now Visva Bharati University, India.
When copying data from this family tree, please include a reference to the origin: Peter Menting, "Family tree Menting", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-menting/I1152.php : accessed March 7, 2026), "Johanna Berendina Schadron (1902-)".
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