The temperature on September 21, 1889 was about 9.5 °C. There was 4 mm of rain. The air pressure was 10 kgf/m2 and came mainly from the west-southwest. The airpressure was 75 cm mercury. The atmospheric humidity was 73%. Source: KNMI
January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
March 23 » The Ahmadiyya Muslim Community is established by Mirza Ghulam Ahmad in Qadian, British India.
May 31 » Johnstown Flood: Over 2,200 people die after a dam fails and sends a 60-foot (18-meter) wall of water over the town of Johnstown, Pennsylvania.
September 28 » The General Conference on Weights and Measures (CGPM) defines the length of a meter.
November 8 » Montana is admitted as the 41st U.S. state.
November 15 » Brazil is declared a republic by Marshal Deodoro da Fonseca as Emperor Pedro II is deposed in a military coup.
Day of marriage July 18, 1929
The temperature on July 18, 1929 was between 13.6 °C and 26.4 °C and averaged 19.2 °C. There was 11.5 hours of sunshine (71%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from March 8, 1926 to August 10, 1929 the cabinet De Geer I, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 9 » Members of the Viet Nam Quoc Dan Dang assassinated the labor recruiter Bazin, prompting a crackdown by French colonial authorities.
February 11 » Kingdom of Italy and the Vatican sign the Lateran Treaty.
September 24 » Jimmy Doolittle performs the first flight without a window, proving that full instrument flying from take off to landing is possible.
October 18 » The Judicial Committee of the Privy Council overrules the Supreme Court of Canada in Edwards v. Canada when it declares that women are considered "Persons" under Canadian law.
November 3 » The Gwangju Student Independence Movement occurred.
December 19 » The Indian National Congress promulgates the Purna Swaraj (the Declaration of the Independence of India).
Day of death January 7, 1975
The temperature on January 7, 1975 was between 3.7 °C and 8.2 °C and averaged 5.7 °C. There was 10.6 mm of rain during 7.4 hours. There was 1.1 hours of sunshine (14%). The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
March 10 » Vietnam War: Ho Chi Minh Campaign: North Vietnamese troops attack Ban Mê Thuột in the South on their way to capturing Saigon in the final push for victory over South Vietnam.
March 26 » The Biological Weapons Convention comes into force.
June 24 » Eastern Air Lines Flight 66 encounters severe wind shear and crashes on final approach to New York's JFK Airport killing 113 of the 124 passengers on board, making it the deadliest U.S. plane crash at the time. This accident led to decades of research into downburst and microburst phenomena and their effects on aircraft.
June 25 » Mozambique achieves independence from Portugal.
September 15 » The French department of "Corse" (the entire island of Corsica) is divided into two: Haute-Corse (Upper Corsica) and Corse-du-Sud (Southern Corsica).
September 24 » Southwest Face expedition members become the first persons to reach the summit of Mount Everest by any of its faces, instead of using a ridge route.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I17047.php : accessed February 18, 2026), "Grietje Visser (1889-1975)".
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