February 18 » Second Boer War: Imperial forces suffer their worst single-day loss of life on Bloody Sunday, the first day of the Battle of Paardeberg.
February 23 » Second Boer War: During the Battle of the Tugela Heights, the first British attempt to take Hart's Hill fails.
June 14 » The second German Naval Law calls for the Imperial German Navy to be doubled in size, resulting in an Anglo-German naval arms race.
June 17 » Boxer Rebellion: Western Allied and Japanese forces capture the Taku Forts in Tianjin, China.
June 21 » Boxer Rebellion. China formally declares war on the United States, Britain, Germany, France and Japan, as an edict issued from the Empress Dowager Cixi.
October 9 » The Cook Islands become a territory of the United Kingdom.
Day of marriage April 20, 1921
The temperature on April 20, 1921 was between -1.3 °C and 10.4 °C and averaged 4.9 °C. There was 4.1 mm of rain. There was 4.9 hours of sunshine (35%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 20 » The first Constitution of Turkey is adopted, making fundamental changes in the source and exercise of sovereignty by consecrating the principle of national sovereignty.
March 1 » Following mass protests in Petrograd demanding greater freedom in the RSFSR, the Kronstadt rebellion began, with sailors and citizens taking up arms against the Bolsheviks.
April 11 » Emir Abdullah establishes the first centralised government in the newly created British protectorate of Transjordan.
June 15 » Bessie Coleman earns her pilot's license, becoming the first female pilot of African-American descent.
July 22 » Rif War: The Spanish Army suffers its worst military defeat in modern times to the Berbers of the Rif region of Spanish Morocco.
September 21 » A storage silo in Oppau, Germany, explodes, killing 500–600 people.
Day of death September 17, 1986
The temperature on September 17, 1986 was between 8.2 °C and 13.4 °C and averaged 10.6 °C. There was 0.5 hours of sunshine (4%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
February 22 » Start of the People Power Revolution in the Philippines.
March 4 » The Soviet Vega 1 begins returning images of Halley's Comet and the first images of its nucleus.
May 19 » The Firearm Owners Protection Act is signed into law by U.S. President Ronald Reagan.
August 21 » Carbon dioxide gas erupts from volcanic Lake Nyos in Cameroon, killing up to 1,800 people within a 20-kilometer range.
November 6 » Sumburgh disaster: A British International Helicopters Boeing 234LR Chinook crashes 2⁄2 miles east of Sumburgh Airport killing 45 people. It is the deadliest civilian helicopter crash on record.
November 29 » The Surinamese military attacks the village of Moiwana during the Suriname Guerrilla War, killing at least 39 civilians, mostly women and children.
When copying data from this family tree, please include a reference to the origin: J. den Nieuwenboer, "Family tree Den Nieuwenboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-den-nieuwenboer/I7487.php : accessed May 10, 2025), "Gerrit van der Kolk (1900-1986)".
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