January 31 » Czechoslav Trade Union Association is founded in Prague.
April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
May 26 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
Day of marriage May 15, 1920
The temperature on May 15, 1920 was between 3.9 °C and 15.5 °C and averaged 10.1 °C. There was 13.6 hours of sunshine (87%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the 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.
February 2 » The Tartu Peace Treaty is signed between Estonia and Russia.
February 10 » Józef Haller de Hallenburg performs symbolic wedding of Poland to the sea, celebrating restitution of Polish access to open sea.
February 24 » The Nazi Party (NSDAP) was founded by Adolf Hitler in the Hofbräuhaus beer hall in Munich, Germany
May 7 » Treaty of Moscow: Soviet Russia recognizes the independence of the Democratic Republic of Georgia only to invade the country six months later.
November 1 » American fishing schooner Esperanto defeats the Canadian fishing schooner Delawana in the First International Fishing Schooner Championship Races in Halifax, Nova Scotia.
November 28 » Irish War of Independence: Kilmichael Ambush: The Irish Republican Army ambush a convoy of British Auxiliaries and kill seventeen.
Day of death February 22, 1960
The temperature on February 22, 1960 was between -1.4 °C and 5.1 °C and averaged 2.9 °C. There was 5.2 mm of rain during 8.8 hours. The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
May 3 » The Off-Broadway musical comedy The Fantasticks opens in New York City's Greenwich Village, eventually becoming the longest-running musical of all time.
May 11 » Adolf Eichmann is captured by the Mossad in Argentina.
May 13 » Hundreds of University of California, Berkeley students congregate for the first day of protest against a visit by the House Committee on Un-American Activities.
June 26 » Madagascar gains its independence from France.
November 2 » Penguin Books is found not guilty of obscenity in the trial R v Penguin Books Ltd, the Lady Chatterley's Lover case.
December 11 » French forces crack down in a violent clash with protesters in French Algeria during a visit by French President Charles de Gaulle.
When copying data from this family tree, please include a reference to the origin: Tjitze Koster, "Family tree Koster Twijslerheide e.o.", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-koster/I4013.php : accessed January 24, 2026), "Tjitze de Vries (1897-1960)".
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