The temperature on April 17, 1910 was between 4.4 °C and 10.6 °C and averaged 8.0 °C. There was 0.4 hours of sunshine (3%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. 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.
April 29 » The Parliament of the United Kingdom passes the People's Budget, the first budget in British history with the expressed intent of redistributing wealth among the British public.
October 5 » In a revolution in Portugal the monarchy is overthrown and a republic is declared.
October 22 » Hawley Harvey Crippen (the first felon to be arrested with the help of radio) is convicted of poisoning his wife.
December 3 » Modern neon lighting is first demonstrated by Georges Claude at the Paris Motor Show.
December 21 » An underground explosion at the Hulton Bank Colliery No. 3 Pit in Over Hulton, Westhoughton, England, kills 344 miners.
Day of death August 2, 1980
The temperature on August 2, 1980 was between 13.2 °C and 27.7 °C and averaged 21.7 °C. There was 11.3 hours of sunshine (73%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
May 9 » In Norco, California, five masked gunmen hold up a Security Pacific bank, leading to a violent shoot-out and one of the largest pursuits in California history. Two of the gunmen and one police officer are killed and thirty-three police and civilian vehicles are destroyed in the chase.
May 13 » An F3 tornado hits Kalamazoo County, Michigan. President Jimmy Carter declares it a federal disaster area.
May 17 » General Chun Doo-hwan of South Korea seizes control of the government and declares martial law in order to suppress student demonstrations.
July 5 » Swedish tennis player Björn Borg wins his fifth Wimbledon final and becomes the first male tennis player to win the championships five times in a row (1976–1980).
July 30 » Israel's Knesset passes the Jerusalem Law.
November 23 » The 6.9 Mw Irpinia earthquake shakes southern Italy with a maximum Mercalli intensity of X (Extreme), killing 2,483–4,900, and injuring 7,700–8,934.
When copying data from this family tree, please include a reference to the origin: Peeters Mathieu, "FutureHistory", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-riske/I17592.php : accessed October 2, 2026), "Leo August Alice Raymond de Groep (1910-1980)".
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