The temperature on November 12, 1895 was about 6.6 °C. There was 5 mm of rain. The airpressure was 75 cm mercury. The atmospheric humidity was 92%. Source: KNMI
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.
May 25 » The Republic of Formosa is formed, with Tang Jingsong as its president.
August 31 » German Count Ferdinand von Zeppelin patents his navigable balloon.
October 22 » In Paris an express train derails after overrunning the buffer stop, crossing almost 30 metres (100ft) of concourse before crashing through a wall and falling 10 metres (33ft) to the road below.
December 28 » The Lumière brothers perform for their first paying audience at the Grand Cafe in Boulevard des Capucines.
December 28 » Wilhelm Röntgen publishes a paper detailing his discovery of a new type of radiation, which later will be known as x-rays.
Day of marriage January 12, 1921
The temperature on January 12, 1921 was between 5.5 °C and 9.0 °C and averaged 7.2 °C. There was 6.3 mm of rain. There was 3.7 hours of sunshine (46%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. 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 20 » The first Constitution of Turkey is adopted, making fundamental changes in the source and exercise of sovereignty by consecrating the principle of national sovereignty.
March 8 » Spanish Prime Minister Eduardo Dato Iradier is assassinated while exiting the parliament building in Madrid.
May 8 » The creation of the Communist Party of Romania.
August 3 » Major League Baseball Commissioner Kenesaw Mountain Landis confirms the ban of the eight Chicago Black Sox, the day after they were acquitted by a Chicago court.
September 8 » Margaret Gorman, a 16-year-old, wins the Atlantic City Pageant's Golden Mermaid trophy; pageant officials later dubbed her the first Miss America.
October 29 » United States: Second trial of Sacco and Vanzetti in Boston, Massachusetts.
Day of death December 17, 1950
The temperature on December 17, 1950 was between -4.2 °C and 0.9 °C and averaged -1.4 °C. There was 1.9 mm of rain during 6.9 hours. There was 2.1 hours of sunshine (27%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-southeast. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
June 28 » Korean War: North Korean Army conducts the Seoul National University Hospital massacre.
August 1 » Guam is organized as a United States commonwealth as the President Harry S. Truman signs the Guam Organic Act.
September 3 » "Nino" Farina becomes the first Formula One Drivers' champion after winning the 1950 Italian Grand Prix.
November 17 » United Nations Security Council Resolution 89 relating to the Palestine Question is adopted.
November 21 » Two Canadian National Railway trains collide in northeastern British Columbia in the Canoe River train crash; the death toll is 21, with 17 of them Canadian troops bound for Korea.
November 25 » The Great Appalachian Storm of November 1950 impacts 22 American states, killing 353 people, injuring over 160, and causing US$66.7 million in damages (1950 dollars).
Day of burial December 21, 1950
The temperature on December 21, 1950 was between -3.3 °C and 0.8 °C and averaged -0.2 °C. There was 0.2 mm of rain during 0.8 hours. The average windspeed was 2 Bft (weak wind) and was prevailing from the east. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
January 23 » The Knesset resolves that Jerusalem is the capital of Israel.
May 19 » Egypt announces that the Suez Canal is closed to Israeli ships and commerce.
June 1 » The Chinchaga fire ignites. By September, it would become the largest single fire on record in North America.
September 23 » Korean War: The Battle of Hill 282 is the first US friendly-fire incident on British military personnel since World War II.
September 24 » The eastern United States is covered by a thick haze from the Chinchaga fire in western Canada.
December 9 » Cold War: Harry Gold is sentenced to 30 years in jail for helping Klaus Fuchs pass information about the Manhattan Project to the Soviet Union. His testimony is later instrumental in the prosecution of Julius and Ethel Rosenberg.
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The Family tree Dovermann publication was prepared by Chir Dovermann (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Chir Dovermann, "Family tree Dovermann", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-dovermann/I21.php : accessed January 5, 2026), "Anton Koopmann (1895-1950)".
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