March 14 » The Gold Standard Act is ratified, placing the United States currency on the gold standard.
March 18 » AFC Ajax Amsterdam, The Netherlands's biggest and most successful football club, was founded.
April 30 » Hawaii becomes a territory of the United States, with Sanford B. Dole as governor.
June 20 » Baron Eduard Toll, leader of the Russian Polar Expedition of 1900, departs Saint Petersburg in Russia on the explorer ship Zarya, never to return.
July 9 » The Federation of Australia is given royal assent.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of marriage January 11, 1921
The temperature on January 11, 1921 was between 4.1 °C and 9.4 °C and averaged 6.4 °C. There was 0.1 mm of rain. There was 5.8 hours of sunshine (72%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the west-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.
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.
March 20 » The Upper Silesia plebiscite was a plebiscite mandated by the Versailles Treaty to determine a section of the border between Weimar Germany and Poland.
September 5 » Roscoe "Fatty" Arbuckle party in San Francisco ends with the death of the young actress Virginia Rappe: One of the first scandals of the Hollywood community.
September 21 » A storage silo in Oppau, Germany, explodes, killing 500–600 people.
October 5 » The World Series is the first to be broadcast on radio.
November 4 » Japanese Prime Minister Hara Takashi is assassinated in Tokyo.
When copying data from this family tree, please include a reference to the origin: Sim Mostert, "Genealogy Pot en Smit", database, Genealogy Online (https://www.genealogieonline.nl/genealogie_pot_smit/I6311.php : accessed February 9, 2026), "CHRISTINE ELISABETH van SCHAARDENBURG (1900-)".
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