January 31 » Czechoslav Trade Union Association is founded in Prague.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
September 12 » Tirah Campaign: In the Battle of Saragarhi, ten thousand Pashtun tribesmen suffer several hundred casualties while attacking 21 Sikh soldiers in British service.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
Day of marriage March 5, 1920
The temperature on March 5, 1920 was between 2.5 °C and 13.3 °C and averaged 7.6 °C. There was 5.3 hours of sunshine (48%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. 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 10 » League of Nations Covenant enters into force. On January 16 the organization holds its first council meeting, in Paris.
January 10 » The Treaty of Versailles takes effect, officially ending World War I.
January 16 » The League of Nations holds its first council meeting in Paris, France.
August 19 » The Tambov Rebellion breaks out, in response to the Bolshevik policy of Prodrazvyorstka.
August 31 » Polish–Soviet War: A decisive Polish victory in the Battle of Komarów.
November 28 » Irish War of Independence: Kilmichael Ambush: The Irish Republican Army ambush a convoy of British Auxiliaries and kill seventeen.
Day of death October 15, 1935
The temperature on October 15, 1935 was between 11.6 °C and 15.2 °C and averaged 12.8 °C. There was -0.1 hours of sunshine (0%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 7 » Benito Mussolini and French Foreign minister Pierre Laval sign the Franco-Italian Agreement.
January 11 » Amelia Earhart becomes the first person to fly solo from Hawaii to California.
August 31 » In an attempt to stay out of the growing tensions concerning Germany and Japan, the United States passes the first of its Neutrality Acts.
October 3 » Second Italo-Abyssinian War: Italy invades Ethiopia.
October 19 » The League of Nations places economic sanctions on Italy for its invasion of Ethiopia.
November 9 » The Congress of Industrial Organizations is founded in Atlantic City, New Jersey, by eight trade unions belonging to the American Federation of Labor.
When copying data from this family tree, please include a reference to the origin: Tijs van den Brink, "Parentele of Geurt Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/geurt-jacobs/I38253.php : accessed January 30, 2026), "Elbertje Koetsier (1897-1935)".
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