The temperature on November 23, 1911 was between -0.7 °C and 3.0 °C and averaged 1.5 °C. There was 0.3 hours of sunshine (4%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
January 29 » Mexican Revolution: Mexicali is captured by the Mexican Liberal Party, igniting the Magonista rebellion of 1911.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
September 29 » Italy declares war on the Ottoman Empire.
October 5 » The Kowloon–Canton Railway commences service.
October 10 » The day after a bomb explodes prematurely, the Wuchang Uprising begins against the Chinese monarchy.
November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.
Day of death October 16, 1957
The temperature on October 16, 1957 was between 5.7 °C and 12.5 °C and averaged 9.7 °C. There was 8.8 mm of rain during 2.8 hours. The almost completely overcast was. The average windspeed was 3 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: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I166264.php : accessed January 10, 2026), "Johannes Karel de Heer (± 1884-1957)".
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