February 1 » Shinhan Bank, the oldest bank in South Korea, opens in Seoul.
April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
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.
May 26 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
August 2 » Anglo-Afghan War: The Siege of Malakand ends when a relief column is able to reach the British garrison in the Malakand states.
Day of marriage February 23, 1921
The temperature on February 23, 1921 was between -2.6 °C and 10.8 °C and averaged 3.6 °C. There was 9.1 hours of sunshine (87%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. 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 18 » The second Peace of Riga is signed between Poland and the Soviet Union.
April 2 » The Autonomous Government of Khorasan, a military government encompassing the modern state of Iran, is established.
October 26 » The Chicago Theatre opens.
November 4 » Japanese Prime Minister Hara Takashi is assassinated in Tokyo.
December 22 » Opening of Visva-Bharati College, also known as Santiniketan College, now Visva Bharati University, India.
Day of death January 23, 1964
The temperature on January 23, 1964 was between -2.4 °C and 0.9 °C and averaged -0.9 °C. There was 0.2 mm of rain. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
January 8 » President Lyndon B. Johnson declares a "War on Poverty" in the United States.
January 16 » Hello, Dolly! opened on Broadway, beginning a run of 2,844 performances.
February 10 » Melbourne–Voyager collision: The aircraft carrier HMASMelbourne collides with and sinks the destroyer HMASVoyager off the south coast of New South Wales, Australia, killing 82.
May 29 » The Arab League meets in East Jerusalem to discuss the Palestinian question, leading to the formation of the Palestine Liberation Organization.
September 4 » Scotland's Forth Road Bridge near Edinburgh officially opens.
December 11 » Che Guevara speaks at the United Nations General Assembly in New York City.
When copying data from this family tree, please include a reference to the origin: Peter Keesman, "Family tree Keesman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-keesman/I5443.php : accessed February 17, 2026), "Jan Jansen (1897-1964)".
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