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.
May 28 » In San Francisco, John Muir organizes the Sierra Club.
September 9 » Amalthea, third moon of Jupiter is discovered by Edward Emerson Barnard.
September 28 » The first night game for American football takes place in a contest between Wyoming Seminary and Mansfield State Normal.
November 12 » Pudge Heffelfinger becomes the first professional American football player on record, participating in his first paid game for the Allegheny Athletic Association.
December 18 » Premiere performance of The Nutcracker by Pyotr Ilyich Tchaikovsky in Saint Petersburg, Russia.
Day of marriage May 13, 1915
The temperature on May 13, 1915 was between 6.4 °C and 12.2 °C and averaged 8.1 °C. There was 23.0 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
April 24 » The arrest of 250 Armenian intellectuals and community leaders in Istanbul marks the beginning of the Armenian Genocide.
May 17 » The last British Liberal Party government (led by H. H. Asquith) falls.
June 9 » William Jennings Bryan resigns as Woodrow Wilson's Secretary of State over a disagreement regarding the United States' handling of the sinking of the RMSLusitania.
September 5 » The pacifist Zimmerwald Conference begins.
September 12 » French soldiers rescue over 4,000 Armenian Genocide survivors stranded on Musa Dagh.
December 20 » World War I: The last Australian troops are evacuated from Gallipoli.
Day of death January 12, 1981
The temperature on January 12, 1981 was between -3.5 °C and 1.3 °C and averaged -0.3 °C. There was 10.0 mm of rain during 7.0 hours. The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
In The Netherlands , there was from Friday, September 11, 1981 to Saturday, May 29, 1982 the cabinet Van Agt II, with Mr. A.A.M. van Agt (CDA) as prime minister.
January 19 » Iran hostage crisis: United States and Iranian officials sign an agreement to release 52 American hostages after 14 months of captivity.
February 6 » The National Resistance Army of Uganda launches an attack on a Ugandan Army installation in the central Mubende District to begin the Ugandan Bush War.
August 25 » Voyager 2 spacecraft makes its closest approach to Saturn.
September 21 » Belize is granted full independence from the United Kingdom.
November 23 » Iran–Contra affair: Ronald Reagan signs the top secret National Security Decision Directive 17 (NSDD-17), giving the Central Intelligence Agency the authority to recruit and support Contra rebels in Nicaragua.
December 11 » El Mozote massacre: Armed forces in El Salvador kill an estimated 900 civilians in an anti-guerrilla campaign during the Salvadoran Civil War.
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/I112150.php : accessed October 5, 2026), "Theunis Koopstra (1892-1981)".
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