The temperature on July 11, 1937 was between 8.9 °C and 16.9 °C and averaged 13.3 °C. There was 0.4 mm of rain during 0.5 hours. There was 2.0 hours of sunshine (12%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
March 21 » Ponce massacre: Nineteen people in Ponce, Puerto Rico are gunned down by police acting on orders of the US-appointed Governor, Blanton C. Winship.
April 1 » Spanish Civil War: Jaén, Spain is bombed by German fascist forces, supporting Francoist Nationalists.
June 3 » The Duke of Windsor marries Wallis Simpson.
July 2 » Amelia Earhart and navigator Fred Noonan are last heard from over the Pacific Ocean while attempting to make the first equatorial round-the-world flight.
August 28 » Toyota Motors becomes an independent company.
September 21 » J. R. R. Tolkien's The Hobbit is published.
Day of death March 11, 1942
The temperature on March 11, 1942 was between -4.1 °C and 3.3 °C and averaged -1.0 °C. The average windspeed was 1 Bft (weak wind) and was prevailing from the northwest. 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.
February 20 » Lieutenant Edward O'Hare becomes America's first World War II flying ace.
April 9 » World War II: The Battle of Bataan ends. An Indian Ocean raid by Japan's 1st Air Fleet sinks the British aircraft carrier HMSHermes and the Australian destroyer HMASVampire.
April 17 » French prisoner of war General Henri Giraud escapes from his castle prison in Königstein Fortress.
July 1 » The Australian Federal Government becomes the sole collector of income tax in Australia as State Income Tax is abolished.
September 3 » World War II: In response to news of its coming liquidation, Dov Lopatyn leads an uprising in the Ghetto of Lakhva (present-day Belarus).
September 12 » World War II: RMS Laconia, carrying civilians, Allied soldiers and Italian POWs is torpedoed off the coast of West Africa and sinks with a heavy loss of life.
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/I77883.php : accessed February 6, 2026), "Jacobje Koops (1937-1942)".
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