The temperature on May 21, 1910 was between 12.8 °C and 26.9 °C and averaged 19.9 °C. There was 10.7 hours of sunshine (67%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
January 1 » Captain David Beatty is promoted to Rear admiral, and becomes the youngest admiral in the Royal Navy (except for Royal family members) since Horatio Nelson.
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).
March 8 » French aviator Raymonde de Laroche becomes the first woman to receive a pilot's license.
April 28 » Frenchman Louis Paulhan wins the 1910 London to Manchester air race, the first long-distance aeroplane race in England.
June 17 » Aurel Vlaicu pilots an A. Vlaicu nr. 1 on its first flight.
October 6 » Eleftherios Venizelos is elected prime minister of Greece for the first of seven times.
When copying data from this family tree, please include a reference to the origin: H. Panjer, "Family tree Panjer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_panjer/I5000.php : accessed December 29, 2025), "Karel Jansen (± 1882-????)".
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