April 2 » Dmitry Sipyagin, Minister of Interior of the Russian Empire, is assassinated in the Marie Palace, Saint Petersburg.
April 20 » Pierre and Marie Curie refine radium chloride.
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.
November 21 » The Philadelphia Football Athletics defeated the Kanaweola Athletic Club of Elmira, New York, 39–0, in the first ever professional American football night game.
December 10 » The opening of the reservoir of the Aswan Dam in Egypt.
Day of death August 31, 1989
The temperature on August 31, 1989 was between 14.1 °C and 20.1 °C and averaged 16.4 °C. There was 4.6 mm of rain during 4.6 hours. There was 0.8 hours of sunshine (6%). The almost completely overcast was. The average windspeed was 1 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 6 » Satwant Singh and Kehar Singh are sentenced to death for conspiracy in the assassination of Prime Minister Indira Gandhi; the two men are executed the same day.
February 2 » Soviet–Afghan War: The last Soviet armoured column leaves Kabul.
February 10 » Ron Brown is elected chairman of the Democratic National Committee becoming the first African American to lead a major American political party.
June 24 » Jiang Zemin succeeds Zhao Ziyang to become the General Secretary of the Communist Party of China after the Tiananmen Square protests of 1989.
October 19 » The convictions of the Guildford Four are quashed by the Court of Appeal of England and Wales, after they had spent 15 years in prison.
December 6 » The École Polytechnique massacre (or Montreal Massacre): Marc Lépine, an anti-feminist gunman, murders 14 young women at the École Polytechnique in Montreal.
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/I142809.php : accessed October 7, 2026), "Grietje de Groot (1902-1989)".
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