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.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
June 22 » British colonial officers Charles Walter Rand and Lt. Charles Egerton Ayerst are assassinated in Pune, Maharashtra, India by the Chapekar brothers and Mahadeo Vinayak Ranade, who are later caught and hanged.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
September 11 » After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
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 2 » The second Palmer Raid, ordered by the US Department of Justice, results in 6,000 suspected communists and anarchists being arrested and held without trial.
March 13 » The Kapp Putsch briefly ousts the Weimar Republic government from Berlin.
April 23 » The Grand National Assembly of Turkey (TBMM) is founded in Ankara. The assembly denounces the government of Sultan Mehmed VI and announces the preparation of a temporary constitution.
April 28 » Azerbaijan is added to the Soviet Union.
August 11 » The Latvian–Soviet Peace Treaty, which relinquished Russia's authority and pretenses to Latvia, is signed, ending the Latvian War of Independence.
August 16 » The congress of the Communist Party of Bukhara opens. The congress would call for armed revolution.
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.
February 17 » The Troubles: The Provisional IRA detonates an incendiary bomb at the La Mon restaurant, near Belfast, killing 12 and seriously injuring 30 others, all Protestants.
March 5 » The Landsat 3 is launched from Vandenberg Air Force Base in California.
July 30 » The 730: Okinawa Prefecture changes its traffic on the right-hand side of the road to the left-hand side.
August 10 » Three members of the Ulrich family are killed in an accident. This leads to the Ford Pinto litigation.
October 8 » Australia's Ken Warby sets the current world water speed record of 317.60mph at Blowering Dam, Australia.
November 17 » The Star Wars Holiday Special airs on CBS, receiving negative reception from critics, fans, and even Star Wars creator George Lucas.
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 February 11, 2026), "Roelina Postma (1897-1978)".
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