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).
March 1 » Marshal F. S. López dies during the Battle of Cerro Corá thus marking the end of the Paraguayan War.
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 6 » Franco-Prussian War: The Battle of Wörth results 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 18 » Old Faithful Geyser is observed and named by Henry D. Washburn.
December 12 » Joseph H. Rainey of South Carolina becomes the second black U.S. congressman.
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 27 » The International Working Union of Socialist Parties is founded in Vienna.
March 6 » Portuguese Communist Party is founded as the Portuguese Section of the Communist International.
March 24 » The 1921 Women's Olympiad begins in Monte Carlo, first international women's sports event.
October 13 » Soviet republics sign the Treaty of Kars to formalize the borders between Turkey and the South Caucasus states.
October 21 » President Warren G. Harding delivers the first speech by a sitting U.S. President against lynching in the deep South.
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 15 » Kingdom of Romania establishes its legation in Helsinki.
March 31 » The Royal Australian Air Force is formed.
June 30 » U.S. President Warren G. Harding appoints former President William Howard Taft as Chief Justice of the United States.
August 23 » British airship R-38 experiences structural failure over Hull in England and crashes in the Humber Estuary. Of her 49 British and American training crew, only four survive.
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.
December 6 » The Anglo-Irish Treaty is signed in London by British and Irish representatives.
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 9, 2026), "Roelf Zwart (1870-1921)".
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