February 6 » The Permanent Court of Arbitration, an international arbitration court at The Hague, is created when the Senate of the Netherlands ratifies an 1899 peace conference decree.
March 7 » The German liner SSKaiser Wilhelm der Grosse becomes the first ship to send wireless signals to shore.
May 22 » The Associated Press is formed in New York City as a non-profit news cooperative.
May 24 » Second Boer War: The United Kingdom annexes the Orange Free State.
August 16 » The Battle of Elands River during the Second Boer War ends after a 13-day siege is lifted by the British. The battle had begun when a force of between 2,000 and 3,000 Boers had surrounded a force of 500 Australians, Rhodesians, Canadians and British soldiers at a supply dump at Brakfontein Drift.
September 17 » Philippine–American War: Filipinos under Juan Cailles defeat Americans under Colonel Benjamin F. Cheatham Jr. at Mabitac.
Day of marriage June 13, 1921
The temperature on June 13, 1921 was between 10.3 °C and 16.2 °C and averaged 12.9 °C. There was 1.7 mm of rain. There was 0.7 hours of sunshine (4%). The average windspeed was 4 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.
February 21 » Constituent Assembly of the Democratic Republic of Georgia adopts the country's first constitution.
February 22 » After Russian forces under Baron Roman von Ungern-Sternberg drive the Chinese out, the Bogd Khan is reinstalled as the emperor of Mongolia.
June 28 » Serbian King Alexander I proclaims the new constitution of the Kingdom of Serbs, Croats and Slovenes, known thereafter as the Vidovdan Constitution.
July 10 » Belfast's Bloody Sunday: Sixteen people are killed and 161 houses destroyed during rioting and gun battles in Belfast, Northern Ireland.
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.
October 5 » The World Series is the first to be broadcast on radio.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I131786.php : accessed December 30, 2025), "Siebe Nijboer (1900-)".
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