The temperature on April 17, 1911 was between 0.2 °C and 16.3 °C and averaged 9.9 °C. There was 7.9 hours of sunshine (56%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 12 » The University of the Philippines College of Law is formally established; three future Philippine presidents are among the first enrollees.
January 26 » Glenn Curtiss flies the first successful American seaplane.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 23 » The New York Public Library is dedicated.
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.
October 5 » The Kowloon–Canton Railway commences service.
Day of marriage October 17, 1938
The temperature on October 17, 1938 was between 10.3 °C and 16.6 °C and averaged 13.4 °C. There was 6.4 mm of rain during 3.4 hours. There was 1.2 hours of sunshine (11%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 28 » The World Land Speed Record on a public road is broken by Rudolf Caracciola in the Mercedes-Benz W195 at a speed of 432.7 kilometres per hour (268.9mph).
March 18 » Mexico creates Pemex by expropriating all foreign-owned oil reserves and facilities.
July 3 » United States President Franklin D. Roosevelt dedicates the Eternal Light Peace Memorial and lights the eternal flame at Gettysburg Battlefield.
October 1 » Germany annexes the Sudetenland.
October 14 » The first flight of the Curtiss P-40 Warhawk fighter plane.
November 16 » LSD is first synthesized by Albert Hofmann from ergotamine at the Sandoz Laboratories in Basel.
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/I138092.php : accessed October 24, 2026), "Jan Visser (1911-)".
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