February 27 » Second Boer War: In South Africa, British military leaders receive an unconditional notice of surrender from Boer General Piet Cronjé at the Battle of Paardeberg.
June 14 » Hawaii becomes a United States territory.
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.
June 25 » The Taoist monk Wang Yuanlu discovers the Dunhuang manuscripts, a cache of ancient texts that are of great historical and religious significance, in the Mogao Caves of Dunhuang, China.
August 3 » The Firestone Tire and Rubber Company is founded.
October 9 » The Cook Islands become a territory of the United Kingdom.
Day of death December 21, 1990
The temperature on December 21, 1990 was between 1.4 °C and 9.5 °C and averaged 5.6 °C. There was 0.4 mm of rain during 0.3 hours. There was 2.7 hours of sunshine (35%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
When copying data from this family tree, please include a reference to the origin: Tjitze Koster, "Family tree Koster Twijslerheide e.o.", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-koster/I6916.php : accessed February 7, 2026), "Geeske Jager (1900-1990)".
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