January 28 » The Carnegie Institution of Washington is founded in Washington, D.C. with a $10 million gift from Andrew Carnegie.
April 2 » Dmitry Sipyagin, Minister of Interior of the Russian Empire, is assassinated in the Marie Palace, Saint Petersburg.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
August 22 » Cadillac Motor Company is founded.
November 29 » The Pittsburgh Stars defeated the Philadelphia Athletics, 11–0 to win the first championship associated with an American national professional football league.
Day of death February 28, 1972
The temperature on February 28, 1972 was between 1.3 °C and 7.0 °C and averaged 3.9 °C. The almost completely overcast was. The average windspeed was 1 Bft (weak wind) and was prevailing from the east-northeast. Source: KNMI
In The Netherlands , there was from April 5, 1967 to Tuesday, July 6, 1971 the cabinet Biesheuvel I, with Mr. B.W. Biesheuvel (ARP) as prime minister.
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
February 1 » Kuala Lumpur becomes a city by a royal charter granted by the Yang di-Pertuan Agong of Malaysia.
May 8 » Vietnam War: U.S. President Richard Nixon announces his order to place naval mines in major North Vietnamese ports in order to stem the flow of weapons and other goods to that nation.
August 16 » In an unsuccessful coup d'état attempt, the Royal Moroccan Air Force fires upon Hassan II of Morocco's plane while he is traveling back to Rabat.
September 4 » Mark Spitz becomes the first competitor to win seven medals at a single Olympic Games.
September 30 » Roberto Clemente records the 3,000th and final hit of his career.
November 21 » Voters in South Korea overwhelmingly approve a new constitution, giving legitimacy to Park Chung-hee and the Fourth Republic.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I137419.php : accessed February 14, 2026), "Sieuwke Heidanus (1902-1972)".
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