The temperature on May 20, 1915 was between 9.7 °C and 16.5 °C and averaged 13.0 °C. There was 1.5 hours of sunshine (9%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 22 » Over 600 people are killed in Guadalajara, Mexico, when a train plunges off the tracks into a deep canyon.
May 6 » Babe Ruth, then a pitcher for the Boston Red Sox, hits his first major league home run.
May 7 » World War I: German submarine U-20 sinks RMS Lusitania, killing 1,198 people, including 128 Americans. Public reaction to the sinking turns many former pro-Germans in the United States against the German Empire.
May 23 » World War I: Italy joins the Allies, fulfilling its part of the Treaty of London.
July 16 » Henry James becomes a British citizen to highlight his commitment to Britain during the first World War.
September 30 » World War I: Radoje Ljutovac becomes the first soldier in history to shoot down an enemy aircraft with ground-to-air fire.
Day of marriage April 22, 1937
The temperature on April 22, 1937 was between 4.1 °C and 11.0 °C and averaged 8.6 °C. There was 2.3 mm of rain during 3.4 hours. There was 0.1 hours of sunshine (1%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 23 » The trial of the anti-Soviet Trotskyist center sees seventeen mid-level Communists accused of sympathizing with Leon Trotsky and plotting to overthrow Joseph Stalin's regime.
April 9 » The Kamikaze arrives at Croydon Airport in London. It is the first Japanese-built aircraft to fly to Europe.
June 3 » The Duke of Windsor marries Wallis Simpson.
June 14 » U.S. House of Representatives passes the Marihuana Tax Act.
October 11 » The Duke and Duchess of Windsor tour Nazi Germany for 12 days and meet Adolf Hitler on the 22nd.
December 12 » Second Sino-Japanese War: USS Panay incident: Japanese aircraft bomb and sink U.S. gunboat USSPanay on the Yangtze river in China.
Day of death December 9, 1941
The temperature on December 9, 1941 was between 2.9 °C and 8.9 °C and averaged 6.5 °C. There was 0.2 mm of rain during 0.2 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
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.
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.
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/I397387.php : accessed March 6, 2026), "Wiltje Schoonbeek (1915-1941)".
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