January 18 » An X-ray generating machine is exhibited for the first time by H. L. Smith.
May 26 » Charles Dow publishes the first edition of the Dow Jones Industrial Average.
August 17 » Bridget Driscoll became the first recorded case of a pedestrian killed in a collision with a motor car in the United Kingdom.
September 21 » Anglo-Egyptian conquest of Sudan: British forces under the command of Horatio Kitchener take Dongola.
November 27 » Also sprach Zarathustra by Richard Strauss is first performed.
December 17 » Pittsburgh, Pennsylvania's Schenley Park Casino, which was the first multi-purpose arena with the technology to create an artificial ice surface in North America, is destroyed in a fire.
Day of marriage December 29, 1920
The temperature on December 29, 1920 was between 7.2 °C and 12.2 °C and averaged 9.3 °C. There was 5.5 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the 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.
January 8 » The steel strike of 1919 ends in failure for the Amalgamated Association of Iron, Steel and Tin Workers labor union.
January 28 » Foundation of the Spanish Legion.
May 29 » The Louth flood of 1920 was a severe flash flooding in the Lincolnshire market town of Louth which occurred 29 May 1920, resulting in 23 fatalities in 20 minutes. It has been described as one of the most significant flood disasters in Britain during the 20th century.
August 20 » The first commercial radio station, 8MK (now WWJ), begins operations in Detroit.
October 10 » The Carinthian plebiscite determines that the larger part of the Duchy of Carinthia should remain part of Austria.
December 19 » King Constantine I is restored as King of the Hellenes after the death of his son Alexander of Greece and a plebiscite.
When copying data from this family tree, please include a reference to the origin: Ross Andrews, "Andrews-Vitringa Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/andrews-vitringa-family-tree/P16.php : accessed May 5, 2025), "Willem Adriaan Vitringa Ir. (1896-1986)".
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