March 22 » Before the Société pour L'Encouragement à l'Industrie, brothers Auguste and Louis Lumière demonstrate movie film technology publicly for the first time.
April 8 » In Pollock v. Farmers' Loan & Trust Co. the Supreme Court of the United States declares unapportioned income tax to be unconstitutional.
May 7 » In Saint Petersburg, Russian scientist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector—a primitive radio receiver. In some parts of the former Soviet Union the anniversary of this day is celebrated as Radio Day.
May 25 » The Republic of Formosa is formed, with Tang Jingsong as its president.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
November 27 » At the Swedish–Norwegian Club in Paris, Alfred Nobel signs his last will and testament, setting aside his estate to establish the Nobel Prize after he dies.
Day of marriage May 19, 1921
The temperature on May 19, 1921 was between 7.7 °C and 18.8 °C and averaged 12.9 °C. There was 0.2 mm of rain. There was 9.0 hours of sunshine (57%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. 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.
February 15 » Kingdom of Romania establishes its legation in Helsinki.
February 25 » Georgian capital Tbilisi falls to the invading Russian forces after heavy fighting and the Russians declare the Georgian Soviet Socialist Republic.
March 8 » Spanish Prime Minister Eduardo Dato Iradier is assassinated while exiting the parliament building in Madrid.
June 12 » Mikhail Tukhachevsky orders the use of chemical weapons against the Tambov Rebellion, bringing an end to the peasant uprising.
October 18 » The Crimean Autonomous Soviet Socialist Republic is formed as part of the Russian Soviet Federative Socialist Republic.
October 21 » President Warren G. Harding delivers the first speech by a sitting U.S. President against lynching in the deep South.
Day of death August 8, 1984
The temperature on August 8, 1984 was between 9.6 °C and 23.2 °C and averaged 16.9 °C. There was 1.7 mm of rain during 0.7 hours. There was 3.9 hours of sunshine (26%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
February 3 » Space Shuttle program: STS-41-B is launched using Space Shuttle Challenger.
July 18 » McDonald's massacre in San Ysidro, California: In a fast-food restaurant, James Oliver Huberty opens fire, killing 21 people and injuring 19 others before being shot dead by police.
August 1 » Commercial peat-cutters discover the preserved bog body of a man, called Lindow Man, at Lindow Moss, Cheshire, England.
September 26 » The United Kingdom and China agree to a transfer of sovereignty over Hong Kong, to take place in 1997.
October 5 » Marc Garneau becomes the first Canadian in space.
November 19 » San Juanico disaster: A series of explosions at the Pemex petroleum storage facility at San Juan Ixhuatepec in Mexico City starts a major fire and kills about 500 people.
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/I119351.php : accessed October 21, 2026), "Harm Postma (1895-1984)".
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