February 6 » The Permanent Court of Arbitration, an international arbitration court at The Hague, is created when the Senate of the Netherlands ratifies an 1899 peace conference decree.
May 1 » The Scofield Mine disaster kills over 200 men in Scofield, Utah in what is to date the fifth-worst mining accident in United States history.
May 17 » The children's novel The Wonderful Wizard of Oz, by L. Frank Baum, is first published in the United States. The first copy is given to the author's sister.
June 14 » The second German Naval Law calls for the Imperial German Navy to be doubled in size, resulting in an Anglo-German naval arms race.
July 9 » The Governor of Shanxi province in North China orders the execution of 45 foreign Christian missionaries and local church members, including children.
August 3 » The Firestone Tire and Rubber Company is founded.
Day of marriage September 1, 1921
The temperature on September 1, 1921 was between 6.3 °C and 21.8 °C and averaged 14.3 °C. There was 3.1 hours of sunshine (23%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south. 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 20 » The first Constitution of Turkey is adopted, making fundamental changes in the source and exercise of sovereignty by consecrating the principle of national sovereignty.
February 12 » Bolsheviks launch a revolt in Georgia as a preliminary to the Red Army invasion of Georgia.
February 25 » Georgian capital Tbilisi falls to the invading Russian forces after heavy fighting and the Russians declare the Georgian Soviet Socialist Republic.
March 1 » Following mass protests in Petrograd demanding greater freedom in the RSFSR, the Kronstadt rebellion began, with sailors and citizens taking up arms against the Bolsheviks.
March 8 » Spanish Prime Minister Eduardo Dato Iradier is assassinated while exiting the parliament building in Madrid.
July 11 » A truce in the Irish War of Independence comes into effect.
Day of death May 30, 1947
The temperature on May 30, 1947 was between 12.6 °C and 26.4 °C and averaged 20.4 °C. There was 13.8 hours of sunshine (85%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
July 26 » Cold War: U.S. President Harry S. Truman signs the National Security Act of 1947 into United States law creating the Central Intelligence Agency, United States Department of Defense, United States Air Force, Joint Chiefs of Staff, and the United States National Security Council.
August 7 » Thor Heyerdahl's balsa wood raft, the Kon-Tiki, smashes into the reef at Raroia in the Tuamotu Islands after a 101-day, 7,000 kilometres (4,300mi) journey across the Pacific Ocean in an attempt to prove that pre-historic peoples could have traveled from South America.
October 5 » President Truman makes the first televised Oval Office address.
November 18 » The Ballantyne's Department Store fire in Christchurch, New Zealand, kills 41; it is the worst fire disaster in the history of New Zealand.
November 29 » First Indochina War: French forces carry out a massacre at Mỹ Trạch, Vietnam.
December 23 » The transistor is first demonstrated at Bell Laboratories.
When copying data from this family tree, please include a reference to the origin: Nathalie Persoon, "Family tree Persoon", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-persoon/I1674.php : accessed January 7, 2026), "Barbera Jansen (1900-1947)".
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