June 13 » Yukon Territory is formed, with Dawson chosen as its capital.
August 11 » Spanish–American War: American troops enter the city of Mayagüez, Puerto Rico.
August 13 » Spanish–American War: Spanish and American forces engage in a mock battle for Manila, after which the Spanish commander surrendered in order to keep the city out of Filipino rebel hands.
August 24 » Count Muravyov, Foreign Minister of Russia presents a rescript that convoked the First Hague Peace Conference.
August 29 » The Goodyear tire company is founded.
September 13 » Hannibal Goodwin patents celluloid photographic film.
Day of death July 20, 1986
The temperature on July 20, 1986 was between 8.1 °C and 21.7 °C and averaged 15.2 °C. There was -0.1 mm of rain. There was 1.4 hours of sunshine (9%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. 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.
February 9 » Halley's Comet last appeared in the inner Solar System.
April 15 » The United States launches Operation El Dorado Canyon, its bombing raids against Libyan targets in response to a discotheque bombing in West Germany that killed two U.S. servicemen.
April 27 » The city of Pripyat and surrounding areas are evacuated due to Chernobyl disaster.
August 20 » In Edmond, Oklahoma, U.S. Postal employee Patrick Sherrill guns down 14 of his co-workers and then commits suicide.
October 29 » British Prime Minister Margaret Thatcher opens the last stretch of the M25 motorway.
December 23 » Voyager, piloted by Dick Rutan and Jeana Yeager, lands at Edwards Air Force Base in California becoming the first aircraft to fly non-stop around the world without aerial or ground refueling.
When copying data from this family tree, please include a reference to the origin: L. Postma, "Family tree L. Postma", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-l-postma/I65.php : accessed January 22, 2026), "Thijs Postma (1898-1986)".
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