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 6 » The inauguration of the Musikverein in Vienna, Austria.
February 3 » The Fifteenth Amendment to the United States Constitution is ratified, guaranteeing voting rights to male citizens regardless of race.
March 1 » Marshal F. S. López dies during the Battle of Cerro Corá thus marking the end of the Paraguayan War.
March 16 » The first version of the overture fantasy Romeo and Juliet by Tchaikovsky receives its première performance.
July 19 » Franco-Prussian War: France declares war on Prussia.
September 1 » Franco-Prussian War: The Battle of Sedan is fought, resulting in a decisive Prussian victory.
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.
April 15 » The General Electric Company is formed.
June 11 » The Limelight Department, one of the world's first film studios, is officially established in Melbourne, Australia.
October 26 » Ida B. Wells publishes Southern Horrors: Lynch Law in All Its Phases.
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 9 » English football club Newcastle United is founded.
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.
January 20 » John F. Kennedy is inaugurated the 35th President of the United States of America, becoming the second youngest man to take the office, and the first Catholic.
June 23 » The Antarctic Treaty System, which sets aside Antarctica as a scientific preserve and limits military activity on the continent, its islands and ice shelves, comes into force.
September 10 » In the Italian Grand Prix, a crash causes the death of German Formula One driver Wolfgang von Trips and 13 spectators who are hit by his Ferrari, the deadliest accident in F1 history.
September 17 » The world's first retractable roof stadium, the Civic Arena, opens in Pittsburgh, Pennsylvania.
December 9 » Tanganyika becomes independent from Britain.
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 December 28, 2025), "Sjoerdje de Groot (1870-1961)".
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