April 3 » The trial in the libel case brought by Oscar Wilde begins, eventually resulting in his imprisonment on charges of homosexuality.
April 17 » The Treaty of Shimonoseki between China and Japan is signed. This marks the end of the First Sino-Japanese War, and the defeated Qing Empire is forced to renounce its claims on Korea and to concede the southern portion of the Fengtien province, Taiwan and the Pescadores Islands to Japan.
September 18 » The Atlanta Exposition Speech on race relations is delivered by Booker T. Washington.
October 4 » Horace Rawlins wins the first U.S. Open Men's Golf Championship.
October 21 » The Republic of Formosa collapses as Japanese forces invade.
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 December 24, 1917
The temperature on December 24, 1917 was between -4.5 °C and 4.9 °C and averaged 0.7 °C. There was 2.1 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. 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.
January 11 » The Kingsland munitions factory explosion occurs as a result of sabotage.
May 21 » The Imperial War Graves Commission is established through royal charter to mark, record, and maintain the graves and places of commemoration of the British Empire's military forces.
June 7 » World War I: Battle of Messines: Allied soldiers detonate a series of mines underneath German trenches at Messines Ridge, killing 10,000 German troops.
July 31 » World War I: The Battle of Passchendaele begins near Ypres in West Flanders, Belgium.
August 30 » Vietnamese prison guards led by Trịnh Văn Cấn mutiny at the Thái Nguyên penitentiary against local French authority.
October 24 » First World War: Italy suffers a disastrous defeat on the Austro-Italian front.
Day of death December 16, 1975
The temperature on December 16, 1975 was between -7.8 °C and 0.1 °C and averaged -4.2 °C. There was -0.1 mm of rain. There was 6.5 hours of sunshine (84%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south. 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.
April 2 » Vietnam War: Thousands of civilian refugees flee from Quảng Ngãi Province in front of advancing North Vietnamese troops.
April 4 » Microsoft is founded as a partnership between Bill Gates and Paul Allen in Albuquerque, New Mexico.
May 27 » Dibbles Bridge coach crash near Grassington, in North Yorkshire, England, kills 33 – the highest ever death toll in a road accident in the United Kingdom.
June 29 » Steve Wozniak tested his first prototype of Apple I computer.
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).
November 11 » Australian constitutional crisis of 1975: Australian Governor-General Sir John Kerr dismisses the government of Gough Whitlam, appoints Malcolm Fraser as caretaker Prime Minister and announces a general election to be held in early December.
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/I79471.php : accessed October 10, 2026), "Evert Koopmans (1895-1975)".
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