The temperature on August 20, 1870 was about 15.9 °C. There was 3 mm of rain. The air pressure was 8 kgf/m2 and came mainly from the northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 73%. 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).
February 15 » Stevens Institute of Technology is founded in New Jersey, USA and offers the first Bachelor of Engineering degree in Mechanical Engineering.
February 23 » Reconstruction Era: Post-U.S. Civil War military control of Mississippi ends and it is readmitted to the Union.
July 15 » Rupert's Land and the North-Western Territory are transferred to Canada from the Hudson's Bay Company, and the province of Manitoba and the Northwest Territories are established from these vast territories.
August 2 » Tower Subway, the world's first underground tube railway, opens in London, England, United Kingdom.
August 24 » The Wolseley expedition reaches Manitoba to end the Red River Rebellion.
September 2 » Franco-Prussian War: Battle of Sedan: Prussian forces take Napoleon III of France and 100,000 of his soldiers prisoner.
Day of marriage September 19, 1921
The temperature on September 19, 1921 was between 9.2 °C and 20.2 °C and averaged 14.2 °C. There was 5.9 hours of sunshine (47%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-southeast. 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.
February 21 » Constituent Assembly of the Democratic Republic of Georgia adopts the country's first constitution.
March 8 » Spanish Prime Minister Eduardo Dato Iradier is assassinated while exiting the parliament building in Madrid.
June 28 » Serbian King Alexander I proclaims the new constitution of the Kingdom of Serbs, Croats and Slovenes, known thereafter as the Vidovdan Constitution.
July 2 » World War I: U.S. President Warren G. Harding signs the Knox–Porter Resolution formally ending the war between the United States and Germany.
October 8 » KDKA in Pittsburgh's Forbes Field conducts the first live broadcast of a football game.
November 11 » The Tomb of the Unknowns is dedicated by US President Warren G. Harding at Arlington National Cemetery.
Day of death December 12, 1921
The temperature on December 12, 1921 was between -3.1 °C and 5.6 °C and averaged 2.0 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. 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.
February 21 » Constituent Assembly of the Democratic Republic of Georgia adopts the country's first constitution.
May 19 » The United States Congress passes the Emergency Quota Act establishing national quotas on immigration.
July 11 » Former president of the United States William Howard Taft is sworn in as 10th chief justice of the U.S. Supreme Court, becoming the only person ever to hold both offices.
July 29 » Adolf Hitler becomes leader of the National Socialist German Workers Party.
August 28 » The Red Army dissolved the Free Territory, after driving the Black Army out of Ukraine.
September 7 » The Legion of Mary, the largest apostolic organization of lay people in the Catholic Church, is founded in Dublin, Ireland.
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/I101255.php : accessed October 7, 2026), "Roelf Zwart (1870-1921)".
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