The temperature on February 6, 1910 was between 4.1 °C and 8.3 °C and averaged 7.0 °C. There was 7.6 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
March 8 » French aviator Raymonde de Laroche becomes the first woman to receive a pilot's license.
August 29 » The Japan–Korea Treaty of 1910, also known as the Japan–Korea Annexation Treaty, becomes effective, officially starting the period of Japanese rule in Korea.
October 22 » Hawley Harvey Crippen (the first felon to be arrested with the help of radio) is convicted of poisoning his wife.
November 14 » Aviator Eugene Burton Ely performs the first takeoff from a ship in Hampton Roads, Virginia, taking off from a makeshift deck on the USS Birmingham in a Curtiss pusher.
November 23 » Johan Alfred Ander becomes the last person to be executed in Sweden.
December 21 » An underground explosion at the Hulton Bank Colliery No. 3 Pit in Over Hulton, Westhoughton, England, kills 344 miners.
Day of death June 15, 1954
The temperature on June 15, 1954 was between 2.9 °C and 18.9 °C and averaged 12.6 °C. There was 13.5 hours of sunshine (81%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
March 1 » Armed Puerto Rican nationalists attack the United States Capitol building, injuring five Representatives.
March 1 » Nuclear weapons testing: The Castle Bravo, a 15-megaton hydrogen bomb, is detonated on Bikini Atoll in the Pacific Ocean, resulting in the worst radioactive contamination ever caused by the United States.
April 18 » Gamal Abdel Nasser seizes power in Egypt.
May 6 » Roger Bannister becomes the first person to run the mile in under four minutes.
May 7 » Indochina War: The Battle of Dien Bien Phu ends in a French defeat and a Viet Minh victory (the battle began on March 13).
December 2 » Cold War: The United States Senate votes 65 to 22 to censure Joseph McCarthy for "conduct that tends to bring the Senate into dishonor and disrepute".
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/I52016.php : accessed February 28, 2026), "Hendrik Jan Bos (1910-1954)".
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