January 12 » The National Trust is founded in the United Kingdom.
May 7 » In Saint Petersburg, Russian scientist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector—a primitive radio receiver. In some parts of the former Soviet Union the anniversary of this day is celebrated as Radio Day.
May 25 » The Republic of Formosa is formed, with Tang Jingsong as its president.
August 31 » German Count Ferdinand von Zeppelin patents his navigable balloon.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
November 27 » At the Swedish–Norwegian Club in Paris, Alfred Nobel signs his last will and testament, setting aside his estate to establish the Nobel Prize after he dies.
Day of marriage July 20, 1921
The temperature on July 20, 1921 was between 14.2 °C and 26.2 °C and averaged 19.7 °C. There was 7.5 hours of sunshine (47%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the 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.
January 16 » The Marxist Left in Slovakia and the Transcarpathian Ukraine holds its founding congress in Ľubochňa.
January 20 » The British K-class submarine HMS K5 sinks in the English Channel; all 56 on board die.
February 21 » Constituent Assembly of the Democratic Republic of Georgia adopts the country's first constitution.
April 11 » Emir Abdullah establishes the first centralised government in the newly created British protectorate of Transjordan.
July 2 » World War I: U.S. President Warren G. Harding signs the Knox–Porter Resolution formally ending the war between the United States and Germany.
December 22 » Opening of Visva-Bharati College, also known as Santiniketan College, now Visva Bharati University, India.
Day of death February 19, 1943
The temperature on February 19, 1943 was between -1.3 °C and 6.2 °C and averaged 3.0 °C. There was 0.2 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
March 3 » World War II: In London, 173 people are killed in a crush while trying to enter an air-raid shelter at Bethnal Green tube station.
July 22 » World War II: Axis occupation forces violently disperse a massive protest in Athens, killing 22.
August 15 » World War II: Battle of Trahili: Superior German forces surround Cretan partisans, who manage to escape against all odds.
September 11 » World War II: German troops occupy Corsica and Kosovo-Metohija ending the Italian occupation of Corsica.
November 19 » Holocaust: Nazis liquidate Janowska concentration camp in Lemberg (Lviv), western Ukraine, murdering at least 6,000 Jews after a failed uprising and mass escape attempt.
December 17 » All Chinese are again permitted to become citizens of the United States upon the repeal of the Act of 1882 and the introduction of the Magnuson Act.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I163000.php : accessed March 1, 2026), "Rebecka Kropveld (1895-1943)".
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