March 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
May 8 » The Irish Literary Theatre in Dublin produced its first play.
June 12 » New Richmond tornado: The eighth deadliest tornado in U.S. history kills 117 people and injures around 200.
July 17 » NEC Corporation is organized as the first Japanese joint venture with foreign capital.
September 13 » Henry Bliss is the first person in the United States to be killed in an automobile accident.
December 2 » Philippine–American War: The Battle of Tirad Pass, termed "The Filipino Thermopylae", is fought.
Day of death December 1, 1920
The temperature on December 1, 1920 was between 0.8 °C and 9.1 °C and averaged 5.2 °C. There was 4.7 mm of rain. There was 1.9 hours of sunshine (23%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-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 19 » The United States Senate votes against joining the League of Nations.
February 10 » About 75% of the population in Zone I votes to join Denmark in the 1920 Schleswig plebiscites.
April 23 » The Grand National Assembly of Turkey (TBMM) is founded in Ankara. The assembly denounces the government of Sultan Mehmed VI and announces the preparation of a temporary constitution.
June 11 » During the U.S. Republican National Convention in Chicago, U.S. Republican Party leaders gathered in a room at the Blackstone Hotel to come to a consensus on their candidate for the U.S. presidential election, leading the Associated Press to coin the political phrase "smoke-filled room".
September 16 » The Wall Street bombing: A bomb in a horse wagon explodes in front of the J. P. Morgan building in New York City killing 38 and injuring 400.
November 15 » The Free City of Danzig is established.
When copying data from this family tree, please include a reference to the origin: H. Panjer, "Family tree Panjer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_panjer/I7624.php : accessed January 5, 2026), "Jacoba Johanna Donkers (± 1875-1920)".
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