March 6 » Bayer registers "Aspirin" as a trademark.
June 12 » New Richmond tornado: The eighth deadliest tornado in U.S. history kills 117 people and injures around 200.
July 17 » NEC Corporation is organized as the first Japanese joint venture with foreign capital.
October 11 » The Second Boer War erupts in South Africa between the British-ruled Cape Colony, and the Boer-ruled Transvaal and Orange Free State.
November 2 » The Boers begin their 118-day siege of British-held Ladysmith during the Second Boer War.
December 11 » Second Boer War: In the Battle of Magersfontein the Boers commanded by general Piet Cronjé inflict a defeat on the forces of the British Empire commanded by Lord Methuen trying to relieve the Siege of Kimberley.
Day of marriage May 26, 1921
The temperature on May 26, 1921 was between 13.8 °C and 27.1 °C and averaged 18.2 °C. There was 5.0 mm of rain. There was 7.6 hours of sunshine (47%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. 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 25 » Georgian capital Tbilisi falls to the invading Russian forces after heavy fighting and the Russians declare the Georgian Soviet Socialist Republic.
March 21 » The New Economic Policy is implemented by the Bolshevik Party in response to the economic failure as a result of war communism.
October 19 » The Portuguese Prime Minister and several officials are murdered in the Bloody Night coup.
October 26 » The Chicago Theatre opens.
October 29 » United States: Second trial of Sacco and Vanzetti in Boston, Massachusetts.
November 4 » Japanese Prime Minister Hara Takashi is assassinated in Tokyo.
Day of death November 23, 1970
The temperature on November 23, 1970 was between 2.4 °C and 8.0 °C and averaged 5.2 °C. There was 0.1 mm of rain. There was 0.2 hours of sunshine (2%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
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/I79204.php : accessed October 4, 2026), "Jan Ophuis (1899-1970)".
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