January 31 » Czechoslav Trade Union Association is founded in Prague.
February 1 » Shinhan Bank, the oldest bank in South Korea, opens in Seoul.
February 28 » Queen Ranavalona III, the last monarch of Madagascar, is deposed by a French military force.
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.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
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 March 20, 1920
The temperature on March 20, 1920 was between 2.8 °C and 13.5 °C and averaged 8.1 °C. There was 4.7 hours of sunshine (39%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-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.
February 9 » Under the terms of the Svalbard Treaty, international diplomacy recognizes Norwegian sovereignty over Arctic archipelago Svalbard, and designates it as demilitarized.
February 20 » An earthquake kills between 114 and 130 in Georgia and heavily damages the town of Gori.
March 12 » The Kapp Putsch begins when the Marinebrigade Ehrhardt is ordered to march on Berlin.
May 7 » Kiev Offensive: Polish troops led by Józef Piłsudski and Edward Rydz-Śmigły and assisted by a symbolic Ukrainian force capture Kiev only to be driven out by the Red Army counter-offensive a month later.
July 15 » The Polish Parliament establishes Silesian Voivodeship before the Polish-German plebiscite.
November 28 » Irish War of Independence: Kilmichael Ambush: The Irish Republican Army ambush a convoy of British Auxiliaries and kill seventeen.
Day of death January 28, 1971
The temperature on January 28, 1971 was between 4.5 °C and 7.3 °C and averaged 5.8 °C. There was 6.6 mm of rain during 2.3 hours. There was 0.3 hours of sunshine (3%). The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
May 27 » Pakistani forces massacre over 200 civilians, mostly Bengali Hindus, in the Bagbati massacre.
July 12 » The Australian Aboriginal Flag is flown for the first time.
September 3 » Qatar becomes an independent state.
November 22 » In Britain's worst mountaineering tragedy, the Cairngorm Plateau Disaster, five children and one of their leaders are found dead from exposure in the Scottish mountains.
December 4 » The PNS Ghazi, a submarine belonging to the Pakistan Navy, sinks during the course of the Indo-Pakistani Naval War of 1971.
December 20 » The international aid organization Doctors Without Borders is founded by Bernard Kouchner and a group of journalists in Paris, France.
When copying data from this family tree, please include a reference to the origin: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I29316.php : accessed February 15, 2026), "Derk Kamps (1897-1971)".
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