The temperature on March 12, 1958 was between -7.6 °C and 3.3 °C and averaged -2.1 °C. There was 4.3 hours of sunshine (37%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
January 31 » Cold War: Space Race: The first successful American satellite detects the Van Allen radiation belt.
August 17 » Pioneer 0, America's first attempt at lunar orbit, is launched using the first Thor-Able rocket and fails. Notable as one of the first attempted launches beyond Earth orbit by any country.
August 23 » Chinese Civil War: The Second Taiwan Strait Crisis begins with the People's Liberation Army's bombardment of Quemoy.
October 4 » The current constitution of France is adopted.
November 12 » A team of rock climbers led by Warren Harding completes the first ascent of The Nose on El Capitan in Yosemite Valley.
December 14 » The 3rd Soviet Antarctic Expedition becomes the first to reach the southern pole of inaccessibility.
When copying data from this family tree, please include a reference to the origin: Keith Mann Spencer, "Mann Spencer Tree", database, Genealogy Online (https://www.genealogieonline.nl/mann-spencer-tree/P1774.php : accessed February 1, 2026), "Margaret Wiltsie (1697-1958)".
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