April 6 » In Athens, the opening of the first modern Olympic Games is celebrated, 1,500 years after the original games are banned by Roman emperor Theodosius I.
April 15 » Closing ceremony of the Games of the I Olympiad in Athens, Greece.
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.
July 28 » The city of Miami, Florida is incorporated.
November 17 » The Western Pennsylvania Hockey League, which later became the first ice hockey league to openly trade and hire players, began play at Pittsburgh's Schenley Park Casino.
December 10 » Alfred Jarry's Ubu Roi premieres in Paris. A riot breaks out at the end of the performance.
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 17 » Alcohol Prohibition begins in the United States as the Volstead Act goes into effect.
May 9 » Polish–Soviet War: The Polish army under General Edward Rydz-Śmigły celebrates its capture of Kiev with a victory parade on Khreshchatyk.
July 29 » Construction of the Link River Dam begins as part of the Klamath Reclamation Project.
August 13 » Polish–Soviet War: The Battle of Warsaw begins and will last till August 25. The Red Army is defeated.
August 19 » The Tambov Rebellion breaks out, in response to the Bolshevik policy of Prodrazvyorstka.
December 22 » The GOELRO economic development plan is adopted by the 8th Congress of Soviets of the Russian SFSR.
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
February 22 » Egypt and Syria join to form the United Arab Republic.
March 17 » The United States launches the first solar-powered satellite.
May 13 » May 1958 crisis: A group of French military officers lead a coup in Algiers demanding that a government of national unity be formed with Charles de Gaulle at its head in order to defend French control of Algeria.
May 24 » United Press International is formed through a merger of the United Press and the International News Service.
September 2 » United States Air Force C-130A-II is shot down by fighters over Yerevan in Armenia when it strays into Soviet airspace while conducting a sigint mission. All crew members are killed.
November 25 » French Sudan gains autonomy as a self-governing member of the French Community.
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 February 13, 2026), "Jan Potman (1896-1958)".
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