The temperature on April 17, 1917 was between -0.7 °C and 6.6 °C and averaged 3.1 °C. There was 2.6 mm of rain. There was 3.4 hours of sunshine (24%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-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.
February 3 » First World War: The American entry into World War I begins when diplomatic relations with Germany are severed due to its unrestricted submarine warfare.
March 16 » World War I: A German auxiliary cruiser is sunk in the Action of 16 March 1917.
April 9 » World War I: The Battle of Arras: The battle begins with Canadian Corps executing a massive assault on Vimy Ridge.
October 24 » First World War: Italy suffers a disastrous defeat on the Austro-Italian front.
November 2 » The Military Revolutionary Committee of the Petrograd Soviet, in charge of preparation and carrying out the Russian Revolution, holds its first meeting.
Day of marriage November 21, 1939
The temperature on November 21, 1939 was between -0.3 °C and 8.0 °C and averaged 4.3 °C. There was 0.4 mm of rain during 0.3 hours. There was 0.2 hours of sunshine (2%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
February 27 » United States labor law: The U.S. Supreme Court rules in NLRB v. Fansteel Metallurgical Corp. that the National Labor Relations Board has no authority to force an employer to rehire workers who engage in sit-down strikes.
February 28 » The erroneous word "dord" is discovered in the Webster's New International Dictionary, Second Edition, prompting an investigation.
March 22 » Germany takes Memel from Lithuania.
June 1 » First flight of the German Focke-Wulf Fw 190 fighter aircraft.
September 1 » The Wound Badge for Wehrmacht, SS, Kriegsmarine, and Luftwaffe soldiers is instituted. The final version of the Iron Cross is also instituted on this date.
September 3 » World War II: The United Kingdom and France begin a naval blockade of Germany that lasts until the end of the war. This also marks the beginning of the Battle of the Atlantic.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I231102.php : accessed March 16, 2026), "Catrienus de Boer (1917-< 2016)".
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