The temperature on December 1, 1917 was between 4.6 °C and 8.6 °C and averaged 6.7 °C. There was 1.8 mm of rain. The average windspeed was 5 Bft (very strong wind) and was prevailing from the southwest. 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.
March 15 » Tsar Nicholas II of Russia abdicates the Russian throne ending the 304-year Romanov dynasty.
April 16 » Vladimir Lenin returns to Petrograd, Russia, from exile in Switzerland.
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 2 » The Balfour Declaration proclaims British support for the "establishment in Palestine of a national home for the Jewish people" with the clear understanding "that nothing shall be done which may prejudice the civil and religious rights of existing non-Jewish communities".
Day of death April 1, 1979
The temperature on April 1, 1979 was between 5.0 °C and 9.3 °C and averaged 7.0 °C. There was 1.4 mm of rain during 1.7 hours. There was 0.2 hours of sunshine (2%). The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
January 30 » A Varig Boeing 707-323C freighter, flown by the same commander as Flight 820, disappears over the Pacific Ocean 30 minutes after taking off from Tokyo.
March 8 » Philips demonstrates the compact disc publicly for the first time.
May 4 » Margaret Thatcher becomes the first female Prime Minister of the United Kingdom.
September 16 » Eight people escaped from East Germany to the west in a homemade hot air balloon.
December 4 » The Hastie fire in Hull kills three schoolboys and eventually leads police to arrest Bruce George Peter Lee.
December 23 » Soviet–Afghan War: Soviet Union forces occupy Kabul, the Afghan capital.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I7002.php : accessed January 8, 2026), "Bertha Marie Kool (1917-1979)".
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