The temperature on September 22, 1911 was between 5.4 °C and 18.3 °C and averaged 11.4 °C. There was 7.9 hours of sunshine (64%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
January 12 » The University of the Philippines College of Law is formally established; three future Philippine presidents are among the first enrollees.
March 25 » In New York City, the Triangle Shirtwaist Factory fire kills 146 garment workers.
April 2 » The Australian Bureau of Statistics conducts the country's first national census.
April 6 » During the Battle of Deçiq, Dedë Gjon Luli Dedvukaj, leader of the Malësori Albanians, raises the Albanian flag in the town of Tuzi, Montenegro, for the first time after George Kastrioti (Skanderbeg).
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.
Day of death September 1, 1963
The temperature on September 1, 1963 was between 11.2 °C and 21.0 °C and averaged 16.2 °C. There was 0.3 mm of rain during 0.3 hours. There was 9.8 hours of sunshine (72%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
February 5 » The European Court of Justice's ruling in Van Gend en Loos v Nederlandse Administratie der Belastingen establishes the principle of direct effect, one of the most important, if not the most important, decisions in the development of European Union law.
March 17 » Mount Agung erupted on Bali killing more than 1,100 people.
May 15 » Project Mercury: The launch of the final Mercury mission, Mercury-Atlas 9 with astronaut Gordon Cooper on board. He becomes the first American to spend more than a day in space, and the last American to go into space alone.
August 30 » The Moscow–Washington hotline between the leaders of the U.S. and the Soviet Union goes into operation.
September 25 » Lord Denning releases the UK government's official report on the Profumo affair.
December 10 » An assassination attempt on the British High Commissioner in Aden kills two people and wounds dozens more.
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/I96805.php : accessed October 17, 2026), "Jan Koster (1911-1963)".
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