February 1 » La bohème premieres in Turin at the Teatro Regio (Turin), conducted by the young Arturo Toscanini.
March 1 » Henri Becquerel discovers radioactive decay.
June 28 » An explosion in the Newton Coal Company's Twin Shaft Mine in Pittston, Pennsylvania results in a massive cave-in that kills 58 miners.
August 16 » Skookum Jim Mason, George Carmack and Dawson Charlie discover gold in a tributary of the Klondike River in Canada, setting off the Klondike Gold Rush.
November 1 » A picture showing the bare breasts of a woman appears in National Geographic magazine for the first time.
December 14 » The Glasgow Underground Railway is opened by the Glasgow District Subway Company.
Day of marriage June 23, 1920
The temperature on June 23, 1920 was between 9.2 °C and 20.6 °C and averaged 14.7 °C. There was 4.2 hours of sunshine (25%). The average windspeed was 3 Bft (moderate breeze) 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.
August 18 » The Nineteenth Amendment to the United States Constitution is ratified, guaranteeing women's suffrage.
August 31 » Polish–Soviet War: A decisive Polish victory in the Battle of Komarów.
November 15 » The Free City of Danzig is established.
November 16 » Qantas, Australia's national airline, is founded as Queensland and Northern Territory Aerial Services Limited.
December 19 » King Constantine I is restored as King of the Hellenes after the death of his son Alexander of Greece and a plebiscite.
December 24 » Gabriele D'Annunzio surrendered the Italian Regency of Carnaro in the city of Fiume to Italian armed forces.
Day of death April 22, 1964
The temperature on April 22, 1964 was between 6.3 °C and 14.7 °C and averaged 9.8 °C. There was 0.1 mm of rain during 0.1 hours. There was 7.0 hours of sunshine (49%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
February 1 » The Beatles have their first number one hit in the United States with "I Want to Hold Your Hand".
May 20 » Discovery of the cosmic microwave background radiation by Robert Woodrow Wilson and Arno Penzias.
September 4 » Scotland's Forth Road Bridge near Edinburgh officially opens.
September 27 » The British TSR-2 aircraft XR219 makes its maiden flight.
December 4 » Free Speech Movement: Police arrest over 800 students at the University of California, Berkeley, following their takeover and sit-in at the administration building in protest of the UC Regents' decision to forbid protests on UC property.
December 24 » Vietnam War: Viet Cong operatives bomb the Brinks Hotel in Saigon, South Vietnam to demonstrate they can strike an American installation in the heavily guarded capital.
When copying data from this family tree, please include a reference to the origin: Jaap Geensen, "Geensen database", database, Genealogy Online (https://www.genealogieonline.nl/geensen-database/I1893.php : accessed October 23, 2026), "Marinus Geerard Geense (1896-1964)".
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