January 18 » An X-ray generating machine is exhibited for the first time by H. L. Smith.
February 1 » La bohème premieres in Turin at the Teatro Regio (Turin), conducted by the young Arturo Toscanini.
May 18 » Khodynka Tragedy: A mass panic on Khodynka Field in Moscow during the festivities of the coronation of Russian Tsar Nicholas II results in the deaths of 1,389 people.
May 26 » Charles Dow publishes the first edition of the Dow Jones Industrial Average.
May 26 » Nicholas II becomes the last Tsar of Imperial Russia.
June 28 » An explosion in the Newton Coal Company's Twin Shaft Mine in Pittston, Pennsylvania results in a massive cave-in that kills 58 miners.
Day of marriage April 21, 1920
The temperature on April 21, 1920 was between 1.7 °C and 9.9 °C and averaged 7.2 °C. There was 3.9 mm of rain. There was 1.5 hours of sunshine (11%). The average windspeed was 4 Bft (moderate breeze) 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.
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 19 » The American Civil Liberties Union (ACLU) is founded.
March 13 » The Kapp Putsch briefly ousts the Weimar Republic government from Berlin.
April 23 » The Grand National Assembly of Turkey (TBMM) is founded in Ankara. The assembly denounces the government of Sultan Mehmed VI and announces the preparation of a temporary constitution.
August 20 » The first commercial radio station, 8MK (now WWJ), begins operations in Detroit.
November 16 » Qantas, Australia's national airline, is founded as Queensland and Northern Territory Aerial Services Limited.
Day of death February 8, 1958
The temperature on February 8, 1958 was between -1.9 °C and 8.6 °C and averaged 3.8 °C. There was 0.9 mm of rain during 1.0 hours. The almost completely overcast was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
January 13 » The Moroccan Army of Liberation ambushes a Spanish patrol in the Battle of Edchera.
February 28 » A school bus in Floyd County, Kentucky hits a wrecker truck and plunges down an embankment into the rain-swollen Levisa Fork river. The driver and 26 children die in what remains one of the worst school bus accidents in U.S. history.
March 31 » In the Canadian federal election, the Progressive Conservatives, led by John Diefenbaker, win the largest percentage of seats in Canadian history, with 208 seats of 265.
July 26 » Explorer program: Explorer 4 is launched.
September 14 » The first two German post-war rockets, designed by the German engineer Ernst Mohr, reach the upper atmosphere.
October 7 » The U.S. manned space-flight project is renamed Project Mercury.
When copying data from this family tree, please include a reference to the origin: Alle Elbers, "Sluzigers (e.a.)", database, Genealogy Online (https://www.genealogieonline.nl/sluzigers/I136762.php : accessed December 28, 2025), "Jan Potman (1896-1958)".
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