January 31 » Czechoslav Trade Union Association is founded in Prague.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
July 26 » Anglo-Afghan War: The Pashtun fakir Saidullah leads an army of more than 10,000 to begin a siege of the British garrison in the Malakand Agency of the North West Frontier Province of India.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
Day of marriage September 21, 1921
The temperature on September 21, 1921 was between 7.8 °C and 22.2 °C and averaged 14.5 °C. There was 6.8 hours of sunshine (55%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. 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.
June 30 » U.S. President Warren G. Harding appoints former President William Howard Taft as Chief Justice of the United States.
July 23 » The Communist Party of China (CPC) is established at the founding National Congress.
July 29 » Adolf Hitler becomes leader of the National Socialist German Workers Party.
August 3 » Major League Baseball Commissioner Kenesaw Mountain Landis confirms the ban of the eight Chicago Black Sox, the day after they were acquitted by a Chicago court.
September 21 » A storage silo in Oppau, Germany, explodes, killing 500–600 people.
October 26 » The Chicago Theatre opens.
Day of death July 14, 1978
The temperature on July 14, 1978 was between 8.1 °C and 17.8 °C and averaged 13.5 °C. There was -0.1 mm of rain. There was 2.5 hours of sunshine (15%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
When copying data from this family tree, please include a reference to the origin: Robert Postt, "Family tree Postt", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-postt/I114.php : accessed March 2, 2026), "Sijgie Adriana Post (1897-1978)".
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