The temperature on December 8, 1911 was between 0.5 °C and 7.1 °C and averaged 4.0 °C. There was 0.7 mm of rain. There was 4.5 hours of sunshine (57%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
May 9 » The works of Gabriele D'Annunzio are placed in the Index of Forbidden Books by the Vatican.
May 31 » The President of Mexico Porfirio Díaz flees the country during the Mexican Revolution.
June 22 » Mexican Revolution: Government forces bring an end to the Magonista rebellion of 1911 in the Second Battle of Tijuana.
September 1 » The armored cruiser Georgios Averof is commissioned into the Greek Navy. It now serves as a museum ship.
October 24 » Orville Wright remains in the air nine minutes and 45 seconds in a glider at Kill Devil Hills, North Carolina.
December 14 » Roald Amundsen's team, comprising himself, Olav Bjaaland, Helmer Hanssen, Sverre Hassel, and Oscar Wisting, becomes the first to reach the South Pole.
Day of marriage July 31, 1935
The temperature on July 31, 1935 was between 10.2 °C and 17.4 °C and averaged 13.6 °C. There was 0.2 mm of rain during 0.1 hours. There was 0.2 hours of sunshine (1%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
February 28 » DuPont scientist Wallace Carothers invents nylon.
May 25 » Jesse Owens of Ohio State University breaks three world records and ties a fourth at the Big Ten Conference Track and Field Championships in Ann Arbor, Michigan.
July 16 » The world's first parking meter is installed in Oklahoma City, Oklahoma.
August 14 » Franklin D. Roosevelt signs the Social Security Act, creating a government pension system for the retired.
November 9 » The Congress of Industrial Organizations is founded in Atlantic City, New Jersey, by eight trade unions belonging to the American Federation of Labor.
December 9 » Walter Liggett, American newspaper editor and muckraker, is killed in a gangland murder.
When copying data from this family tree, please include a reference to the origin: Coos van Spijk, "Family tree of Spijk and her many ancestors", database, Genealogy Online (https://www.genealogieonline.nl/van-spijk-stamboom/I68427.php : accessed February 17, 2026), "Jan Kornelis Calsijn (1911-)".
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