April 25 » Spanish–American War: The United States declares war on Spain.
July 25 » Spanish-American War: The American invasion of Spanish-held Puerto Rico begins, as United States Army troops under General Nelson A. Miles land and secure the port at Guánica.
August 24 » Count Muravyov, Foreign Minister of Russia presents a rescript that convoked the First Hague Peace Conference.
October 18 » The United States takes possession of Puerto Rico from Spain.
November 5 » Negrese nationalists revolt against Spanish rule and establish the short-lived Republic of Negros.
December 3 » The Duquesne Country and Athletic Club defeated an all-star collection of early football players 16–0, in what is considered to be the very first all-star game for professional American football.
Day of marriage July 8, 1920
The temperature on July 8, 1920 was between 12.2 °C and 20.2 °C and averaged 16.3 °C. There was 4.4 hours of sunshine (27%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. 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 7 » The New York State Assembly refuses to seat five duly elected Socialist assemblymen.
April 15 » Two security guards are murdered during a robbery in South Braintree, Massachusetts. Anarchists Sacco and Vanzetti would be convicted of and executed for the crime, amid much controversy.
July 15 » The Polish Parliament establishes Silesian Voivodeship before the Polish-German plebiscite.
August 25 » Polish–Soviet War: Battle of Warsaw, which began on August 13, ends with the Red Army's defeat.
September 7 » Two newly purchased Savoia flying boats crash in the Swiss Alps en route to Finland where they would serve with the Finnish Air Force, killing both crews.
November 28 » Irish War of Independence: Kilmichael Ambush: The Irish Republican Army ambush a convoy of British Auxiliaries and kill seventeen.
Day of death March 30, 1971
The temperature on March 30, 1971 was between -0.2 °C and 10.5 °C and averaged 4.4 °C. There was 9.0 hours of sunshine (70%). The almost cloudless was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
March 18 » Peru: a landslide crashes into Yanawayin Lake, killing 200 people at the mining camp of Chungar.
May 27 » Pakistani forces massacre over 200 civilians, mostly Bengali Hindus, in the Bagbati massacre.
June 13 » Vietnam War: The New York Times begins publication of the Pentagon Papers.
September 8 » In Washington, D.C., the John F. Kennedy Center for the Performing Arts is inaugurated, with the opening feature being the premiere of Leonard Bernstein's Mass.
October 28 » Prospero becomes the only British satellite to be launched by a British rocket.
December 5 » Battle of Gazipur: Pakistani forces stand defeated as India cedes Gazipur to Bangladesh.
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/I135826.php : accessed February 12, 2026), "Sijmen van der Sloot (1898-1971)".
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