February 28 » The Second Boer War: The 118-day "Siege of Ladysmith" is lifted.
March 14 » The Gold Standard Act is ratified, placing the United States currency on the gold standard.
April 15 » Philippine–American War: Filipino guerrillas launch a surprise attack on U.S. infantry and begin a four-day siege of Catubig, Philippines.
July 2 » Jean Sibelius' Finlandia receives its première performance in Helsinki with the Helsinki Philharmonic Society conducted by Robert Kajanus.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
December 19 » Hopetoun Blunder: The first Governor-General of Australia John Hope, 7th Earl of Hopetoun, appoints Sir William Lyne premier of the new state of New South Wales, but he is unable to persuade other colonial politicians to join his government and is forced to resign.
Day of marriage December 15, 1920
The temperature on December 15, 1920 was between -8.6 °C and -4.0 °C and averaged -6.2 °C. There was 5.6 hours of sunshine (72%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-northeast. 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 2 » The second Palmer Raid, ordered by the US Department of Justice, results in 6,000 suspected communists and anarchists being arrested and held without trial.
January 16 » Zeta Phi Beta Sorority Incorporated was founded on the campus of Howard University.
May 7 » Morecambe Football Club was founded during a meeting at the West View Hotel on the town's promenade.
June 4 » Hungary loses 71% of its territory and 63% of its population when the Treaty of Trianon is signed in Paris.
August 20 » The first commercial radio station, 8MK (now WWJ), begins operations in Detroit.
November 21 » Irish War of Independence: In Dublin, 31 people are killed in what became known as "Bloody Sunday".
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/I6397.php : accessed October 5, 2026), "PIETERNELLA POT (1900-)".
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