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
January 13 » The first public radio broadcast takes place; a live performance of the operas Cavalleria rusticana and Pagliacci are sent out over the airwaves from the Metropolitan Opera House in New York.
May 11 » An act of the U.S. Congress establishes Glacier National Park in Montana.
May 31 » The South Africa Act comes into force, establishing the Union of South Africa.
October 1 » A large bomb destroys the Los Angeles Times building, killing 21.
October 20 » The hull of the RMSOlympic, sister-ship to the ill-fated RMS Titanic, is launched from the Harland and Wolff shipyard in Belfast.
October 21 » HMSNiobe arrives in Halifax Harbour to become the first ship of the Royal Canadian Navy.
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.
March 31 » The Chicago, Rock Island and Pacific Railroad operates its final train after being ordered to liquidate its assets because of bankruptcy and debts owed to creditors.
April 12 » The Americo-Liberian government of Liberia is violently deposed.
June 27 » The 'Ustica massacre': Itavia Flight 870 crashes in the sea while en route from Bologna to Palermo, Italy, killing all 81 on board.
July 8 » The inaugural 1980 State of Origin game is won by Queensland who defeat New South Wales 20–10 at Lang Park.
September 11 » A new constitution of Chile is established under the influence of then Chilean dictator Augusto Pinochet, which is subject to controversy in Chile today.
October 26 » The Peter Muhlenberg Memorial in Washington, D.C. is dedicated.
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 September 30, 2026), "Leo August Alice Raymond de Groep (1910-1980)".
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