January 12 » The National Trust is founded in the United Kingdom.
February 9 » William G. Morgan creates a game called Mintonette, which soon comes to be referred to as volleyball.
March 22 » Before the Société pour L'Encouragement à l'Industrie, brothers Auguste and Louis Lumière demonstrate movie film technology publicly for the first time.
May 25 » The Republic of Formosa is formed, with Tang Jingsong as its president.
November 28 » The first American automobile race takes place over the 54 miles from Chicago's Jackson Park to Evanston, Illinois. Frank Duryea wins in approximately 10 hours.
December 28 » Wilhelm Röntgen publishes a paper detailing his discovery of a new type of radiation, which later will be known as x-rays.
Day of marriage May 23, 1918
The temperature on May 23, 1918 was between 9.0 °C and 26.1 °C and averaged 16.8 °C. There was 10.6 hours of sunshine (66%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
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 24 » World War I: First tank-to-tank combat, during the second Battle of Villers-Bretonneux. Three British Mark IVs meet three German A7Vs.
July 6 » The Left SR uprising in Russia starts with the assassination of German ambassador Wilhelm von Mirbach by Cheka members.
November 1 » Malbone Street Wreck: The worst rapid transit accident in US history occurs under the intersection of Malbone Street and Flatbush Avenue, Brooklyn, New York City, with at least 102 deaths.
November 11 » Józef Piłsudski assumes supreme military power in Poland - symbolic first day of Polish independence.
December 1 » The Kingdom of Serbs, Croats and Slovenes (later known as the Kingdom of Yugoslavia) is proclaimed.
December 28 » Constance Markievicz, while detained in Holloway prison, became the first woman to be elected MP to the British House of Commons.
Day of death April 3, 1921
The temperature on April 3, 1921 was between 4.6 °C and 20.8 °C and averaged 12.1 °C. There was 11.1 hours of sunshine (85%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-northeast. 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 16 » The Marxist Left in Slovakia and the Transcarpathian Ukraine holds its founding congress in Ľubochňa.
June 20 » Workers of Buckingham and Carnatic Mills in the city of Chennai, India, begin a four-month strike.
September 8 » Margaret Gorman, a 16-year-old, wins the Atlantic City Pageant's Golden Mermaid trophy; pageant officials later dubbed her the first Miss America.
November 4 » Japanese Prime Minister Hara Takashi is assassinated in Tokyo.
November 4 » The Saalschutz Abteilung (hall defense detachment) of the Nazi Party is renamed the Sturmabteilung (storm detachment) after a large riot in Munich.
November 11 » The Tomb of the Unknowns is dedicated by US President Warren G. Harding at Arlington National Cemetery.
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/I181369.php : accessed October 17, 2026), "Geeske Postema (1895-1921)".
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