The temperature on July 11, 1920 was between 12.9 °C and 21.9 °C and averaged 17.2 °C. There was 3.6 hours of sunshine (22%). The average windspeed was 2 Bft (weak wind) 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.
February 24 » The Nazi Party (NSDAP) was founded by Adolf Hitler in the Hofbräuhaus beer hall in Munich, Germany
June 4 » Hungary loses 71% of its territory and 63% of its population when the Treaty of Trianon is signed in Paris.
August 20 » The first commercial radio station, 8MK (now WWJ), begins operations in Detroit.
August 26 » The 19th amendment to United States Constitution takes effect, giving women the right to vote.
September 17 » The National Football League is organized as the American Professional Football Association in Canton, Ohio.
November 21 » Irish War of Independence: In Dublin, 31 people are killed in what became known as "Bloody Sunday".
Day of marriage January 6, 1940
The temperature on January 6, 1940 was between -9.3 °C and 0.5 °C and averaged -4.1 °C. There was 5.2 hours of sunshine (66%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
May 7 » World War II: The Norway Debate in the British House of Commons begins, and leads to the replacement of Prime Minister Neville Chamberlain with Winston Churchill three days later.
May 9 » World War II: The German submarine U-9 sinks the French coastal submarine Doris near Den Helder.
June 17 » The three Baltic states of Estonia, Latvia and Lithuania fall under the occupation of the Soviet Union.
June 18 » The "Finest Hour" speech is delivered by Winston Churchill.
September 12 » Cave paintings are discovered in Lascaux, France.
November 11 » World War II: In the Battle of Taranto, the Royal Navy launches the first all-aircraft ship-to-ship naval attack in history.
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/I554303.php : accessed January 14, 2026), "Harmke de Jong (1920-< 2019)".
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