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.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
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.
December 30 » The British Colony of Natal annexes Zululand.
Day of marriage January 4, 1921
The temperature on January 4, 1921 was between 6.0 °C and 9.2 °C and averaged 8.0 °C. There was 2.0 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-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.
February 25 » Georgian capital Tbilisi falls to the invading Russian forces after heavy fighting and the Russians declare the Georgian Soviet Socialist Republic.
March 20 » The Upper Silesia plebiscite was a plebiscite mandated by the Versailles Treaty to determine a section of the border between Weimar Germany and Poland.
July 27 » Researchers at the University of Toronto, led by biochemist Frederick Banting, prove that the hormone insulin regulates blood sugar.
October 5 » The World Series is the first to be broadcast on radio.
October 19 » The Portuguese Prime Minister and several officials are murdered in the Bloody Night coup.
November 4 » Japanese Prime Minister Hara Takashi is assassinated in Tokyo.
Day of death January 20, 1967
The temperature on January 20, 1967 was between 2.5 °C and 7.4 °C and averaged 5.2 °C. There was 0.2 hours of sunshine (2%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
May 10 » The Northrop M2-F2 crashes on landing, becoming the inspiration for the novel Cyborg and TV series The Six Million Dollar Man.
September 3 » Dagen H in Sweden: Traffic changes from driving on the left to driving on the right overnight.
September 11 » China's People's Liberation Army (PLA) launched an attack on Indian posts at Nathu La, Sikkim, India, which resulted a military clashes.
October 4 » Omar Ali Saifuddien III of Brunei abdicates in favour of his son.
November 3 » Vietnam War: The Battle of Dak To begins.
November 11 » Vietnam War: In a propaganda ceremony in Phnom Penh, Cambodia, three American prisoners of war are released by the Viet Cong and turned over to "new left" antiwar activist Tom Hayden.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I5668.php : accessed January 28, 2026), "Christina Johanna Dreyer b5c1d3e9f7g8 (1897-1967)".
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