The temperature on February 17, 1917 was between -1.1 °C and 6.6 °C and averaged 3.5 °C. There was 0.1 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
February 23 » First demonstrations in Saint Petersburg, Russia. The beginning of the February Revolution (March 8 in the Gregorian calendar).
March 8 » The United States Senate votes to limit filibusters by adopting the cloture rule.
July 12 » The Bisbee Deportation occurs as vigilantes kidnap and deport nearly 1,300 striking miners and others from Bisbee, Arizona.
October 15 » World War I: Dutch dancer Mata Hari is executed by France for espionage.
December 6 » Halifax Explosion: A munitions explosion near Halifax, Nova Scotia kills more than 1,900 people in the largest artificial explosion up to that time.
December 20 » Cheka, the first Soviet secret police force, is founded.
Day of death June 17, 1983
The temperature on June 17, 1983 was between 4.3 °C and 16.6 °C and averaged 11.6 °C. There was -0.1 mm of rain. There was 14.2 hours of sunshine (85%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
June 13 » Pioneer 10 becomes the first man-made object to leave the central Solar System when it passes beyond the orbit of Neptune.
June 18 » Space Shuttle program: STS-7, Astronaut Sally Ride becomes the first American woman in space.
July 19 » The first three-dimensional reconstruction of a human head in a CT is published.
September 1 » Cold War: Korean Air Lines Flight 007 is shot down by a Soviet Union jet fighter when the commercial aircraft enters Soviet airspace, killing all 269 on board, including Congressman Lawrence McDonald.
October 21 » The metre is defined as the distance light travels in a vacuum in 1/299,792,458 of a second.
December 10 » Democracy is restored in Argentina with the inauguration of President Raúl Alfonsín.
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/I130480.php : accessed October 16, 2026), "Arjen Koopman (1917-1983)".
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