The temperature on June 11, 1910 was between 13.7 °C and 21.3 °C and averaged 16.4 °C. There was 0.3 mm of rain. There was 3.4 hours of sunshine (20%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
April 16 » The oldest existing indoor ice hockey arena still used for the sport in the 21st century, Boston Arena, opens for the first time.
May 4 » The Royal Canadian Navy is created.
May 6 » George V becomes King of Great Britain, Ireland, and many overseas territories, on the death of his father, Edward VII.
May 31 » The South Africa Act comes into force, establishing the Union of South Africa.
June 25 » The United States Congress passes the Mann Act, which prohibits interstate transport of women or girls for “immoral purposes”; the ambiguous language would be used to selectively prosecute people for years to come.
September 22 » The Duke of York's Picture House opens in Brighton, now the oldest continually operating cinema in Britain.
Day of death June 21, 1986
The temperature on June 21, 1986 was between 11.0 °C and 21.2 °C and averaged 15.2 °C. There was 8.9 hours of sunshine (53%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. 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.
January 19 » The first IBM PC computer virus is released into the wild. A boot sector virus dubbed (c)Brain, it was created by the Farooq Alvi Brothers in Lahore, Pakistan, reportedly to deter unauthorized copying of the software they had written.
February 9 » Halley's Comet last appeared in the inner Solar System.
February 19 » Akkaraipattu massacre: the Sri Lankan Army massacres 80 Tamil farm workers in eastern Sri Lanka.
June 30 » The U.S. Supreme Court rules in Bowers v. Hardwick that states can outlaw homosexual acts between consenting adults.
October 27 » The British government suddenly deregulates financial markets, leading to a total restructuring of the way in which they operate in the country, in an event now referred to as the Big Bang.
December 19 » Mikhail Gorbachev, leader of the Soviet Union, releases Andrei Sakharov and his wife from exile in Gorky.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I2200.php : accessed September 26, 2026), "Sytze van der Heide (1910-1986)".
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