The temperature on November 20, 1911 was between 2.9 °C and 7.9 °C and averaged 5.7 °C. There was 6.6 mm of rain. There was 1.8 hours of sunshine (21%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 15 » More than 300 Chinese immigrants are killed in the Torreón massacre when the forces of the Mexican Revolution led by Emilio Madero take the city of Torreón from the Federales.
July 4 » A massive heat wave strikes the northeastern United States, killing 380 people in eleven days and breaking temperature records in several cities.
September 7 » French poet Guillaume Apollinaire is arrested and put in jail on suspicion of stealing the Mona Lisa from the Louvre museum.
October 13 » Prince Arthur, Duke of Connaught and Strathearn, becomes the first Governor General of Canada of royal descent.
November 3 » Chevrolet officially enters the automobile market in competition with the Ford Model T.
Day of marriage May 19, 1934
The temperature on May 19, 1934 was between 2.0 °C and 19.8 °C and averaged 13.0 °C. There was 11.2 hours of sunshine (71%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south. Source: KNMI
April 12 » The strongest surface wind gust in the world at the time of 231mph, is measured on the summit of Mount Washington, New Hampshire. It has since been surpassed.
May 23 » Infamous American bank robbers Bonnie and Clyde are ambushed by police and killed in Bienville Parish, Louisiana.
June 30 » The Night of the Long Knives, Adolf Hitler's violent purge of his political rivals in Germany, takes place.
August 2 » Gleichschaltung: Adolf Hitler becomes Führer of Germany following the death of President Paul von Hindenburg.
September 18 » The Soviet Union is admitted to the League of Nations.
December 1 » In the Soviet Union, Politburo member Sergey Kirov is assassinated. Stalin uses the incident as a pretext to initiate the Great Purge.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I137990.php : accessed October 20, 2026), "Ymkje Witveen (1911-)".
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