The temperature on August 23, 1917 was between 15.2 °C and 23.5 °C and averaged 18.6 °C. There was 7.5 mm of rain. There was 3.3 hours of sunshine (23%). 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.
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.
April 12 » World War I: Canadian forces successfully complete the taking of Vimy Ridge from the Germans.
September 26 » World War I: The Battle of Polygon Wood begins.
October 4 » World War I: The Battle of Broodseinde is fought between the British and German armies in Flanders.
November 8 » The first Council of People's Commissars is formed, including Vladimir Lenin, Leon Trotsky and Joseph Stalin.
December 15 » World War I: An armistice between Russia and the Central Powers is signed.
When copying data from this family tree, please include a reference to the origin: H.J. Sieba, "Family tree Sieba", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-sieba/I818.php : accessed January 8, 2026), "Zwaantje Wals (1917-)".
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