The temperature on April 23, 1890 was about 12.5 °C. There was 1 mm of rain. The air pressure was 12 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 65%. Source: KNMI
January 1 » Eritrea is consolidated into a colony by the Italian government.
April 14 » The Pan-American Union is founded by the First International Conference of American States in Washington, D.C.
October 12 » Uddevalla Suffrage Association is formed.
November 29 » The Meiji Constitution goes into effect in Japan, and the first Diet convenes.
December 15 » Hunkpapa Lakota leader Sitting Bull is killed on Standing Rock Indian Reservation, leading to the Wounded Knee Massacre.
December 29 » Wounded Knee Massacre on Pine Ridge Indian Reservation, 300 Lakota are killed by the United States 7th Cavalry Regiment.
Day of marriage April 19, 1917
The temperature on April 19, 1917 was between -1.6 °C and 7.6 °C and averaged 4.1 °C. There was 1.9 mm of rain. There was 0.9 hours of sunshine (6%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-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.
June 5 » World War I: Conscription begins in the United States as "Army registration day".
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.
August 30 » Vietnamese prison guards led by Trịnh Văn Cấn mutiny at the Thái Nguyên penitentiary against local French authority.
November 7 » The Gregorian calendar date of the October Revolution, which gets its name from the Julian calendar date of 25 October. On this date in 1917, the Bolsheviks storm the Winter Palace.
November 8 » The first Council of People's Commissars is formed, including Vladimir Lenin, Leon Trotsky and Joseph Stalin.
November 20 » World War I: Battle of Cambrai begins: British forces make early progress in an attack on German positions but are later pushed back.
Day of death August 2, 1951
The temperature on August 2, 1951 was between 16.3 °C and 24.1 °C and averaged 19.6 °C. There was 10.0 hours of sunshine (65%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. 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).
In The Netherlands , there was from March 15, 1951 to September 2, 1952 the cabinet Drees I, with Dr. W. Drees (PvdA) as prime minister.
January 6 » Korean War: Beginning of the Ganghwa massacre, in the course of which an estimated 200–1,300 South Korean communist sympathizers are slaughtered.
March 3 » Jackie Brenston, with Ike Turner and his band, records "Rocket 88", often cited as "the first rock and roll record", at Sam Phillips's recording studios in Memphis, Tennessee.
March 31 » Remington Rand delivers the first UNIVAC I computer to the United States Census Bureau.
April 29 » Tibetan delegates to the Central People's Government arrive in Beijing and draft a Seventeen Point Agreement for Chinese sovereignty and Tibetan autonomy.
May 14 » Trains run on the Talyllyn Railway in Wales for the first time since preservation, making it the first railway in the world to be operated by volunteers.
May 21 » The opening of the Ninth Street Show, otherwise known as the 9th Street Art Exhibition: A gathering of a number of notable artists, and the stepping-out of the post war New York avant-garde, collectively known as the New York School.
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/I79469.php : accessed October 9, 2026), "Jochum Koopmans (1890-1951)".
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