The temperature on November 2, 1911 was between 0.4 °C and 10.9 °C and averaged 5.5 °C. There was 1.4 mm of rain. There was 2.8 hours of sunshine (29%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
August 1 » Harriet Quimby takes her pilot's test and becomes the first U.S. woman to earn an Aero Club of America aviator's certificate.
August 24 » Manuel de Arriaga is elected and sworn-in as the first President of Portugal.
October 13 » Prince Arthur, Duke of Connaught and Strathearn, becomes the first Governor General of Canada of royal descent.
December 29 » Sun Yat-sen becomes the provisional President of the Republic of China; he formally takes office on January 1, 1912.
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/I137405.php : accessed January 20, 2026), "Margaretha Wilhelmina Beukenkamp (1911-)".
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