April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
August 22 » Cadillac Motor Company is founded.
October 24 » Guatemala's Santa María Volcano begins to erupt, becoming the third-largest eruption of the 20th century.
December 14 » The Commercial Pacific Cable Company lays the first Pacific telegraph cable, from San Francisco to Honolulu.
Day of marriage July 20, 1927
The temperature on July 20, 1927 was between 6.3 °C and 20.8 °C and averaged 14.6 °C. There was 8.0 hours of sunshine (50%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
January 9 » A fire at the Laurier Palace movie theatre in Montreal, Quebec, Canada, kills 78 children.
June 27 » Prime Minister of Japan Tanaka Giichi convenes an eleven-day conference to discuss Japan's strategy in China. The Tanaka Memorial, a forged plan for world domination, is later claimed to be a secret report leaked from this conference.
August 19 » Patriarch Sergius of Moscow proclaims the declaration of loyalty of the Russian Orthodox Church to the Soviet Union.
September 22 » Jack Dempsey loses the "Long Count" boxing match to Gene Tunney.
December 8 » The Brookings Institution, one of the United States' oldest think tanks, is founded through the merger of three organizations that had been created by philanthropist Robert S. Brookings.
December 19 » Three Indian revolutionaries, Ram Prasad Bismil, Roshan Singh and Ashfaqulla Khan, are executed by the British Raj for participation in the Kakori conspiracy.
Day of death December 20, 1986
The temperature on December 20, 1986 was between 1.8 °C and 5.6 °C and averaged 3.9 °C. There was 7.8 mm of rain during 8.4 hours. There was 0.2 hours of sunshine (3%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
May 2 » Chernobyl disaster: The City of Chernobyl is evacuated six days after the disaster.
May 3 » Twenty-one people are killed and forty-one are injured after a bomb explodes on Air Lanka Flight 512 at Colombo airport in Sri Lanka.
May 25 » The Hands Across America event takes place.
June 30 » The U.S. Supreme Court rules in Bowers v. Hardwick that states can outlaw homosexual acts between consenting adults.
August 20 » In Edmond, Oklahoma, U.S. Postal employee Patrick Sherrill guns down 14 of his co-workers and then commits suicide.
November 3 » The Compact of Free Association becomes law, granting the Federated States of Micronesia and the Marshall Islands independence from the United States.
When copying data from this family tree, please include a reference to the origin: Sim Mostert, "Genealogy Pot en Smit", database, Genealogy Online (https://www.genealogieonline.nl/genealogie_pot_smit/I5507.php : accessed December 26, 2025), "ALIDA POT (1902-1986)".
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