January 4 » Utah is admitted as the 45th U.S. state.
January 18 » An X-ray generating machine is exhibited for the first time by H. L. Smith.
April 15 » Closing ceremony of the Games of the I Olympiad in Athens, Greece.
August 30 » Philippine Revolution: After Spanish victory in the Battle of San Juan del Monte, eight provinces in the Philippines are declared under martial law by the Spanish Governor-General Ramón Blanco y Erenas.
November 1 » A picture showing the bare breasts of a woman appears in National Geographic magazine for the first time.
December 10 » Alfred Jarry's Ubu Roi premieres in Paris. A riot breaks out at the end of the performance.
Day of marriage May 6, 1920
The temperature on May 6, 1920 was between 7.7 °C and 14.3 °C and averaged 10.5 °C. There was 3.8 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 14 » The League of Women Voters is founded in Chicago.
March 8 » The Arab Kingdom of Syria, the first modern Arab state to come into existence, is established.
March 13 » The Kapp Putsch briefly ousts the Weimar Republic government from Berlin.
March 14 » In the second of the 1920 Schleswig plebiscites, about 80% of the population in Zone II votes to remain part of Weimar Germany.
April 28 » Azerbaijan is added to the Soviet Union.
June 11 » During the U.S. Republican National Convention in Chicago, U.S. Republican Party leaders gathered in a room at the Blackstone Hotel to come to a consensus on their candidate for the U.S. presidential election, leading the Associated Press to coin the political phrase "smoke-filled room".
Day of death September 30, 1966
The temperature on September 30, 1966 was between 8.2 °C and 19.5 °C and averaged 14.3 °C. There was 1.8 hours of sunshine (15%). The partly or heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
February 2 » Pakistan suggests a six-point agenda with Kashmir after the Indo-Pakistani War of 1965.
March 5 » BOAC Flight 911, a Boeing 707 aircraft, breaks apart in mid-air due to clear-air turbulence and crashes into Mount Fuji, Japan, killing all 124 people on board.
April 26 » A new government is formed in the Republic of the Congo, led by Ambroise Noumazalaye.
October 4 » Basutoland becomes independent from the United Kingdom and is renamed Lesotho.
October 22 » The Soviet Union launches Luna 12.
November 15 » Project Gemini: Gemini 12 completes the program's final mission, when it splashes down safely in the Atlantic Ocean.
When copying data from this family tree, please include a reference to the origin: H. J. Otten, "Otten family tree", database, Genealogy Online (https://www.genealogieonline.nl/otten-stamboom/I172.php : accessed January 6, 2026), "Jakoba Heukers (1896-1966)".
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