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.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
December 6 » London becomes the world's first city to host licensed taxicabs.
December 30 » The British Colony of Natal annexes Zululand.
Day of marriage March 20, 1923
The temperature on March 20, 1923 was between 2.0 °C and 13.6 °C and averaged 8.0 °C. There was 7.9 hours of sunshine (65%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 9 » Lithuanian residents of the Memel Territory rebel against the League of Nations' decision to leave the area as a mandated region under French control.
June 18 » Checker Taxi puts its first taxi on the streets.
August 23 » Captain Lowell Smith and Lieutenant John P. Richter performed the first mid-air refueling on De Havilland DH-4B, setting an endurance flight record of 37 hours.
September 4 » Maiden flight of the first U.S. airship, the USSShenandoah.
September 29 » The British Mandate for Palestine takes effect, creating Mandatory Palestine.
October 16 » The Walt Disney Company is founded.
Day of death February 3, 1949
The temperature on February 3, 1949 was between -8 °C and 3.1 °C and averaged -3.5 °C. There was 0.1 mm of rain. There was 7.9 hours of sunshine (86%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
March 25 » More than 92,000 kulaks are suddenly deported from the Baltic states to Siberia.
June 8 » Helen Keller, Dorothy Parker, Danny Kaye, Fredric March, John Garfield, Paul Muni and Edward G. Robinson are named in an FBI report as Communist Party members.
August 24 » The treaty creating the North Atlantic Treaty Organization goes into effect.
August 31 » The retreat of the Democratic Army of Greece in Albania after its defeat on Gramos mountain marks the end of the Greek Civil War.
September 27 » Zeng Liansong's design is chosen as the flag of the People's Republic of China.
December 7 » Chinese Civil War: The Government of the Republic of China moves from Nanking to Taipei, Taiwan.
When copying data from this family tree, please include a reference to the origin: Fokko Helder, "Family tree Helder", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-helder/I39390.php : accessed May 13, 2024), "Maria Nijhoff (1897-1949)".
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