April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution 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 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
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.
December 6 » London becomes the world's first city to host licensed taxicabs.
Day of marriage January 29, 1920
The temperature on January 29, 1920 was between 3.8 °C and 8.5 °C and averaged 6.0 °C. There was 1.7 mm of rain. There was 3.7 hours of sunshine (42%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the southwest. 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.
January 16 » Zeta Phi Beta Sorority Incorporated was founded on the campus of Howard University.
January 23 » The Netherlands refuses to surrender the exiled Kaiser Wilhelm II of Germany to the Allies.
June 15 » Following the 1920 Schleswig plebiscites, Northern Schleswig is transferred from Germany to Denmark.
July 11 » In the East Prussian plebiscite the local populace decides to remain with Weimar Germany.
August 20 » The National Football League is organized as the American Professional Football Conference in Canton, Ohio
August 20 » The first commercial radio station, 8MK (now WWJ), begins operations in Detroit.
Day of death January 28, 1978
The temperature on January 28, 1978 was between 2.9 °C and 6.8 °C and averaged 4.7 °C. There was 0.4 mm of rain during 0.6 hours. There was 0.5 hours of sunshine (6%). The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southeast. 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.
January 24 » Soviet satellite Kosmos 954, with a nuclear reactor on board, burns up in Earth's atmosphere, scattering radioactive debris over Canada's Northwest Territories. Only 1% is recovered.
March 23 » The first UNIFIL troops arrived in Lebanon for peacekeeping mission along the Blue Line.
June 9 » The Church of Jesus Christ of Latter-day Saints opens its priesthood to "all worthy men", ending a 148-year-old policy of excluding black men.
June 26 » Air Canada Flight 189, flying to Toronto, overruns the runway and crashes into the Etobicoke Creek ravine. Two of the 107 passengers on board perish.
July 30 » The 730: Okinawa Prefecture changes its traffic on the right-hand side of the road to the left-hand side.
November 27 » In San Francisco, city mayor George Moscone and openly gay city supervisor Harvey Milk are assassinated by former supervisor Dan White.
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/I75109.php : accessed October 10, 2026), "Roelina Postma (1897-1978)".
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