In The Netherlands , there was from August 21, 1891 to May 9, 1894 the cabinet Van Tienhoven, with Mr. G. van Tienhoven (unie-liberaal) as prime minister.
April 15 » The General Electric Company is formed.
September 8 » The Pledge of Allegiance is first recited.
September 28 » The first night game for American football takes place in a contest between Wyoming Seminary and Mansfield State Normal.
October 12 » The Pledge of Allegiance is first recited by students in many US public schools.
October 13 » Edward Emerson Barnard discovers first comet discovered by photographic means.
November 8 » The New Orleans general strike begins, uniting black and white American trade unionists in a successful four-day general strike action for the first time.
Day of marriage July 7, 1919
The temperature on July 7, 1919 was between 11.2 °C and 15.3 °C and averaged 13.5 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. 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 15 » Rosa Luxemburg and Karl Liebknecht, two of the most prominent socialists in Germany, are tortured and murdered by the Freikorps at the end of the Spartacist uprising.
January 22 » Act Zluky is signed, unifying the Ukrainian People's Republic and the West Ukrainian National Republic.
February 5 » Charlie Chaplin, Mary Pickford, Douglas Fairbanks, and D. W. Griffith launch United Artists.
June 2 » Anarchists simultaneously set off bombs in eight separate U.S. cities.
June 28 » The Treaty of Versailles is signed, ending the state of war between Germany and the Allies of World War I.
July 11 » The eight-hour day and free Sunday become law for workers in the Netherlands.
Day of death October 6, 1971
The temperature on October 6, 1971 was between 0.8 °C and 14.8 °C and averaged 6.9 °C. There was 0.1 mm of rain. There was 10.2 hours of sunshine (90%). The almost cloudless was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
January 25 » Idi Amin leads a coup deposing Milton Obote and becomes Uganda's president.
March 25 » The Army of the Republic of Vietnam abandon an attempt to cut off the Ho Chi Minh trail in Laos.
November 12 » Vietnam War: As part of Vietnamization, US President Richard Nixon sets February 1, 1972 as the deadline for the removal of another 45,000 American troops from Vietnam.
November 27 » The Soviet space program's Mars 2 orbiter releases a descent module. It malfunctions and crashes, but it is the first man-made object to reach the surface of Mars.
December 1 » Cambodian Civil War: Khmer Rouge rebels intensify assaults on Cambodian government positions, forcing their retreat from Kompong Thmar and nearby Ba Ray.
December 4 » The PNS Ghazi, a submarine belonging to the Pakistan Navy, sinks during the course of the Indo-Pakistani Naval War of 1971.
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I300.php : accessed January 17, 2026), "Johanna Margaretha Opperman (1892-1971)".
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