The temperature on April 5, 1910 was between 2.5 °C and 13.9 °C and averaged 8.5 °C. There was 10.0 hours of sunshine (76%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
January 13 » The first public radio broadcast takes place; a live performance of the operas Cavalleria rusticana and Pagliacci are sent out over the airwaves from the Metropolitan Opera House in New York.
January 15 » Construction ends on the Buffalo Bill Dam in Wyoming, United States, which was the highest dam in the world at the time, at 325ft (99m).
May 4 » The Royal Canadian Navy is created.
October 21 » HMSNiobe arrives in Halifax Harbour to become the first ship of the Royal Canadian Navy.
November 7 » The first air freight shipment (from Dayton, Ohio, to Columbus, Ohio) is undertaken by the Wright brothers and department store owner Max Moorehouse.
December 21 » An underground explosion at the Hulton Bank Colliery No. 3 Pit in Over Hulton, Westhoughton, England, kills 344 miners.
Day of marriage August 21, 1941
The temperature on August 21, 1941 was between 10.2 °C and 18.8 °C and averaged 14.3 °C. There was 4.2 mm of rain during 0.7 hours. There was 7.6 hours of sunshine (53%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-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.
April 15 » In the Belfast Blitz, two-hundred bombers of the German Luftwaffe attack Belfast, killing around one thousand people.
May 24 » World War II: In the Battle of the Atlantic, the German Battleship Bismarck sinks then-pride of the Royal Navy, HMSHood, killing all but three crewmen.
June 3 » World War II: The Wehrmacht razes the Greek village of Kandanos to the ground and murders 180 of its inhabitants.
August 29 » World War II: Tallinn, the capital of Estonia, is occupied by Nazi Germany following an occupation by the Soviet Union.
September 30 » World War II: The Babi Yar massacre comes to an end.
November 14 » World War II: In Slonim, German forces engaged in Operation Barbarossa murder 9,000 Jews in a single day.
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/I503589.php : accessed February 3, 2026), "Johannes van der Kloo (1910-)".
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