The temperature on April 30, 1917 was between 2.5 °C and 16.2 °C and averaged 9.6 °C. There was 11.4 hours of sunshine (77%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. 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.
January 19 » Silvertown explosion: A blast at a munitions factory in London kills 73 and injures over 400. The resulting fire causes over £2,000,000 worth of damage.
June 11 » King Alexander assumes the throne of Greece after his father, Constantine I, abdicates under pressure from allied armies occupying Athens.
July 27 » World War I: The Allies reach the Yser Canal at the Battle of Passchendaele.
November 8 » The first Council of People's Commissars is formed, including Vladimir Lenin, Leon Trotsky and Joseph Stalin.
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 18 » The resolution containing the language of the Eighteenth Amendment to enact Prohibition is passed by the United States Congress.
When copying data from this family tree, please include a reference to the origin: Jacqueline Freriksen-Vijn, "Family tree Vijn", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-vijn/I500046.php : accessed March 10, 2026), "Wilhelmus Albertus Kolnaar (± 1900-1917)".
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