The temperature on June 21, 1911 was between 11.2 °C and 18.1 °C and averaged 14.5 °C. There was 3.4 hours of sunshine (20%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 14 » Roald Amundsen's South Pole expedition makes landfall on the eastern edge of the Ross Ice Shelf.
May 19 » Parks Canada, the world's first national park service, is established as the Dominion Parks Branch under the Department of the Interior.
May 21 » President of Mexico Porfirio Díaz and the revolutionary Francisco Madero sign the Treaty of Ciudad Juárez to put an end to the fighting between the forces of both men, concluding the initial phase of the Mexican Revolution.
September 1 » The armored cruiser Georgios Averof is commissioned into the Greek Navy. It now serves as a museum ship.
November 1 » World's first combat aerial bombing mission takes place in Libya during the Italo-Turkish War. Second Lieutenant Giulio Gavotti of Italy drops several small bombs.
November 5 » After declaring war on the Ottoman Empire on September 29, 1911, Italy annexes Tripoli and Cyrenaica.
Day of death August 11, 1973
The temperature on August 11, 1973 was between 13.8 °C and 26.1 °C and averaged 19.5 °C. There was -0.1 mm of rain. There was 12.7 hours of sunshine (85%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
March 17 » The Pulitzer Prize-winning photograph Burst of Joy is taken, depicting a former prisoner of war being reunited with his family, which came to symbolize the end of United States involvement in the Vietnam War.
April 4 » The Twin Towers of the World Trade Center in New York City are officially dedicated.
May 5 » Secretariat wins the 1973 Kentucky Derby in 1:59⁄5, an as-yet unbeaten record.
June 9 » In horse racing, Secretariat wins the U.S. Triple Crown.
July 21 » In Lillehammer, Norway, Mossad agents kill a waiter whom they mistakenly thought was involved in the 1972 Munich Olympics Massacre.
November 4 » The Netherlands experiences the first Car-Free Sunday caused by the 1973 oil crisis. Highways are used only by cyclists and roller skaters.
When copying data from this family tree, please include a reference to the origin: Bert Hemrika, "Family tree Bosch", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-bosch/I2445.php : accessed February 28, 2026), "Cornelis (Cees) Groen (1881-1973)".
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