The temperature on December 5, 1917 was between -8.9 °C and -3.0 °C and averaged -5.6 °C. There was 4.6 hours of sunshine (58%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. 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.
March 2 » The enactment of the Jones–Shafroth Act grants Puerto Ricans United States citizenship.
April 9 » World War I: The Battle of Arras: The battle begins with Canadian Corps executing a massive assault on Vimy Ridge.
July 31 » World War I: The Battle of Passchendaele begins near Ypres in West Flanders, Belgium.
August 18 » A Great Fire in Thessaloniki, Greece destroys 32% of the city leaving 70,000 individuals homeless.
September 26 » World War I: The Battle of Polygon Wood begins.
November 28 » The Estonian Provincial Assembly declares itself the sovereign power of Estonia.
Day of death January 19, 1971
The temperature on January 19, 1971 was between 4.1 °C and 9.0 °C and averaged 6.7 °C. There was 2.4 mm of rain during 3.6 hours. There was 0.9 hours of sunshine (11%). The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
April 10 » Ping-pong diplomacy: In an attempt to thaw relations with the United States, China hosts the U.S. table tennis team for a week-long visit.
April 19 » Sierra Leone becomes a republic, and Siaka Stevens the president.
June 7 » The United States Supreme Court overturns the conviction of Paul Cohen for disturbing the peace, setting the precedent that vulgar writing is protected under the First Amendment to the United States Constitution.
July 11 » Copper mines in Chile are nationalized.
September 3 » Qatar becomes an independent state.
December 6 » Pakistan severs diplomatic relations with India, initiating the Indo-Pakistani War of 1971.
When copying data from this family tree, please include a reference to the origin: Coos van Spijk, "Family tree of Spijk and her many ancestors", database, Genealogy Online (https://www.genealogieonline.nl/van-spijk-stamboom/I97005.php : accessed January 23, 2026), "Zegert van der Plas (1917-1971)".
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