The temperature on July 21, 1935 was between 12.4 °C and 18.2 °C and averaged 15.4 °C. There was 3.9 mm of rain during 0.9 hours. There was 12.2 hours of sunshine (76%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
February 20 » Caroline Mikkelsen becomes the first woman to set foot in Antarctica.
June 18 » Police in Vancouver, British Columbia, Canada, clash with striking longshoremen, resulting in a total of 60 injuries and 24 arrests.
August 15 » Will Rogers and Wiley Post are killed after their aircraft develops engine problems during takeoff in Barrow, Alaska.
December 5 » Mary McLeod Bethune founds the National Council of Negro Women in New York City.
December 9 » The Downtown Athletic Club Trophy, later renamed the Heisman Trophy, is awarded for the first time. The winner is halfback Jay Berwanger of the University of Chicago.
December 17 » First flight of the Douglas DC-3.
Day of marriage January 18, 1955
The temperature on January 18, 1955 was between -4.0 °C and 2.0 °C and averaged -0.3 °C. There was 7.2 mm of rain during 4.7 hours. There was 0.4 hours of sunshine (5%). The partly or heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
May 14 » Cold War: Eight Communist bloc countries, including the Soviet Union, sign a mutual defense treaty called the Warsaw Pact.
May 25 » In the United States, a night-time F5 tornado strikes the small city of Udall, Kansas, killing 80 and injuring 273. It is the deadliest tornado to ever occur in the state and the 23rd deadliest in the U.S.
June 11 » Eighty-three spectators are killed and at least 100 are injured after an Austin-Healey and a Mercedes-Benz collide at the 24 Hours of Le Mans, the deadliest ever accident in motorsports.
July 9 » The Russell–Einstein Manifesto calls for a reduction of the risk of nuclear warfare.
November 5 » After being destroyed in World War II, the rebuilt Vienna State Opera reopens with a performance of Beethoven's Fidelio.
December 5 » E. D. Nixon and Rosa Parks lead the Montgomery Bus Boycott.
When copying data from this family tree, please include a reference to the origin: H. J. Otten, "Otten family tree", database, Genealogy Online (https://www.genealogieonline.nl/otten-stamboom/I57.php : accessed January 19, 2026), "Jansje Harmers (1935-2019)".
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