The temperature on December 15, 1911 was between 3.0 °C and 8.9 °C and averaged 5.7 °C. There was 1.8 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 19 » Parks Canada, the world's first national park service, is established as the Dominion Parks Branch under the Department of the Interior.
May 31 » The President of Mexico Porfirio Díaz flees the country during the Mexican Revolution.
July 4 » A massive heat wave strikes the northeastern United States, killing 380 people in eleven days and breaking temperature records in several cities.
October 10 » The day after a bomb explodes prematurely, the Wuchang Uprising begins against the Chinese monarchy.
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 January 22, 1936
The temperature on January 22, 1936 was between 0.4 °C and 5.0 °C and averaged 2.6 °C. There was 0.4 mm of rain during 0.2 hours. There was 2.3 hours of sunshine (27%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Peeters Mathieu, "FutureHistory", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-riske/I30027.php : accessed September 27, 2026), "Martha Celestina van Herck (1911-)".
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