The temperature on September 2, 1920 was between 7.8 °C and 18.9 °C and averaged 13.4 °C. There was 0.1 mm of rain. There was 6.1 hours of sunshine (45%). 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.
February 14 » The League of Women Voters is founded in Chicago.
March 22 » Azeri and Turkish army soldiers with participation of Kurdish gangs attacked the Armenian inhabitants of Shushi (Nagorno Karabakh).
August 26 » The 19th amendment to United States Constitution takes effect, giving women the right to vote.
October 30 » The Communist Party of Australia is founded in Sydney.
November 12 » Italy and the Kingdom of Serbs, Croats and Slovenes sign the Treaty of Rapallo.
November 21 » Irish War of Independence: In Dublin, 31 people are killed in what became known as "Bloody Sunday".
Day of death December 24, 1999
The temperature on December 24, 1999 was between 4.5 °C and 9.9 °C and averaged 7.6 °C. There was 15.6 mm of rain during 8.7 hours. The almost completely overcast was. The average windspeed was 5 Bft (very strong wind) and was prevailing from the south. Source: KNMI
January 25 » A 6.0 magnitude earthquake hits western Colombia killing at least 1,000.
May 3 » The southwestern portion of Oklahoma City is devastated by an F5 tornado, killing forty-five people, injuring 665, and causing $1billion in damage. The tornado is one of 66 from the 1999 Oklahoma tornado outbreak. This tornado also produces the highest wind speed ever recorded, measured at 301 +/- 20mph (484 +/- 32km/h).
July 9 » Days of student protests begin after Iranian police and hardliners attack a student dormitory at the University of Tehran.
October 26 » Britain's House of Lords votes to end the right of hereditary peers to vote in Britain's upper chamber of Parliament.
December 20 » Macau is handed over to China by Portugal.
December 21 » The Spanish Civil Guard intercepts a van loaded with 950kg of explosives that ETA intended to use to blow up Torre Picasso in Madrid, Spain.
When copying data from this family tree, please include a reference to the origin: Alfred Groot, "Family tree Groot", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-groot/I1575.php : accessed January 2, 2026), "Henrikus Jacobus "Henny" Koersen (1920-1999)".
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