The temperature on May 10, 1870 was about 10.8 °C. The air pressure was 1 kgf/m2 and came mainly from the north-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 62%. Source: KNMI
From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
January 23 » In Montana, U.S. cavalrymen kill 173 Native Americans, mostly women and children, in what becomes known as the Marias Massacre.
February 28 » The Bulgarian Exarchate is established by decree of Sultan Abdülaziz of the Ottoman Empire.
April 13 » The New York City Metropolitan Museum of Art is founded.
September 1 » Franco-Prussian War: The Battle of Sedan is fought, resulting in a decisive Prussian victory.
September 3 » Franco-Prussian War: The Siege of Metz begins, resulting in a decisive Prussian victory on October 23.
September 20 » The Bersaglieri corps enter Rome through the Porta Pia, and complete the unification of Italy.
Day of marriage May 7, 1892
The temperature on May 7, 1892 was about 8.5 °C. There was 0.5 mm of rain. The airpressure was 77 cm mercury. The atmospheric humidity was 84%. Source: KNMI
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.
January 15 » James Naismith publishes the rules of basketball.
June 11 » The Limelight Department, one of the world's first film studios, is officially established in Melbourne, Australia.
July 7 » The Katipunan is established, the discovery of which by Spanish authorities initiated the Philippine Revolution.
September 8 » The Pledge of Allegiance is first recited.
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.
Day of death May 17, 1961
The temperature on May 17, 1961 was between 7.5 °C and 17.0 °C and averaged 13.0 °C. There was 7.4 hours of sunshine (47%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
January 17 » Former Congolese Prime Minister Patrice Lumumba is murdered in circumstances suggesting the support and complicity of the governments of Belgium and the United States.
March 29 » The Twenty-third Amendment to the United States Constitution is ratified, allowing residents of Washington, D.C., to vote in presidential elections.
April 20 » Cold War: Failure of the Bay of Pigs Invasion of US-backed Cuban exiles against Cuba.
May 24 » American civil rights movement: Freedom Riders are arrested in Jackson, Mississippi, for "disturbing the peace" after disembarking from their bus.
May 31 » The South African Constitution of 1961 becomes effective, thus creating the Republic of South Africa, which remains outside the Commonwealth of Nations until 1 June 1994, when South Africa is returned to Commonwealth membership.
November 18 » United States President John F. Kennedy sends 18,000 military advisors to South Vietnam.
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/I167974.php : accessed October 11, 2026), "Sjoerdje de Groot (1870-1961)".
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