January 28 » The Carnegie Institution of Washington is founded in Washington, D.C. with a $10 million gift from Andrew Carnegie.
April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
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.
August 22 » Theodore Roosevelt becomes the first President of the United States to make a public appearance in an automobile.
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 May 11, 1931
The temperature on May 11, 1931 was between 7.6 °C and 19.4 °C and averaged 13.6 °C. There was 2.3 hours of sunshine (15%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 21 » Sir Isaac Isaacs is sworn in as the first Australian-born Governor-General of Australia.
March 25 » The Scottsboro Boys are arrested in Alabama and charged with rape.
March 26 » Swissair is founded as the national airline of Switzerland.
May 1 » The Empire State Building is dedicated in New York City.
May 14 » Five unarmed civilians are killed in the Ådalen shootings, as the Swedish military is called in to deal with protesting workers.
September 18 » The Mukden Incident gives Japan a pretext to invade and occupy Manchuria.
Day of death June 20, 1963
The temperature on June 20, 1963 was between 9.9 °C and 15.5 °C and averaged 13.2 °C. There was 6.0 mm of rain during 11.4 hours. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
May 25 » The Organisation of African Unity is established in Addis Ababa, Ethiopia.
June 10 » The Equal Pay Act of 1963, aimed at abolishing wage disparity based on sex, was signed into law by John F. Kennedy as part of his New Frontier Program.
June 30 » Ciaculli bombing: a car bomb, intended for Mafia boss Salvatore Greco, kills seven police officers and military personnel near Palermo.
July 12 » Pauline Reade, 16, disappears in Gorton, England, the first victim in the Moors murders.
November 24 » Lee Harvey Oswald, the assassin of President John F. Kennedy, is killed by Jack Ruby.
November 29 » Trans-Canada Air Lines Flight 831 crashes shortly after takeoff from Montreal-Dorval International Airport, killing all 118 people on board.
When copying data from this family tree, please include a reference to the origin: J. van Broekhoven, "Database Van Broekhoven", database, Genealogy Online (https://www.genealogieonline.nl/database-van-broekhoven/I343448.php : accessed February 16, 2026), "Anna Arnolda Schoenmakers (1902-1963)".
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