The temperature on July 27, 1911 was between 10.8 °C and 29.0 °C and averaged 21.4 °C. There was 13.4 hours of sunshine (85%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
January 14 » Roald Amundsen's South Pole expedition makes landfall on the eastern edge of the Ross Ice Shelf.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
September 1 » The armored cruiser Georgios Averof is commissioned into the Greek Navy. It now serves as a museum ship.
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
November 3 » Chevrolet officially enters the automobile market in competition with the Ford Model T.
December 14 » Roald Amundsen's team, comprising himself, Olav Bjaaland, Helmer Hanssen, Sverre Hassel, and Oscar Wisting, becomes the first to reach the South Pole.
Day of death December 5, 1966
The temperature on December 5, 1966 was between 0.7 °C and 7.4 °C and averaged 3.4 °C. There was 0.9 mm of rain during 0.8 hours. There was 2.6 hours of sunshine (33%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
January 31 » The Soviet Union launches the unmanned Luna 9 spacecraft as part of the Luna program.
April 30 » The Church of Satan is formed in The Black House, San Francisco.
May 21 » The Ulster Volunteer Force declares war on the Irish Republican Army in Northern Ireland.
July 15 » Vietnam War: The United States and South Vietnam begin Operation Hastings to push the North Vietnamese out of the Vietnamese Demilitarized Zone.
August 1 » Charles Whitman kills 16 people at the University of Texas at Austin before being killed by the police.
August 26 » The South African Border War starts with the battle at Omugulugwombashe.
When copying data from this family tree, please include a reference to the origin: Cor van der Linden, "Kaizer/van der Linden family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaizer/I1663.php : accessed January 16, 2026), "Maria Antonia Elisabeth "Rie" Hertogs (1911-1966)".
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