The temperature on September 13, 1958 was between 9.8 °C and 21.2 °C and averaged 14.9 °C. There was 10.1 hours of sunshine (78%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
April 5 » Ripple Rock, an underwater threat to navigation in the Seymour Narrows in Canada is destroyed in one of the largest non-nuclear controlled explosions of the time.
May 22 » The 1958 riots in Ceylon become a watershed in the race relations of various ethnic communities of Sri Lanka. The total deaths is estimated at 300, mostly Tamils.
May 24 » United Press International is formed through a merger of the United Press and the International News Service.
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.
September 12 » Jack Kilby demonstrates the first working integrated circuit while working at Texas Instruments.
October 7 » The 1958 Pakistani coup d'état inaugurates a prolonged period of military rule.
When copying data from this family tree, please include a reference to the origin: T.J. Mitchell, "Mitchell/Stewart Tree", database, Genealogy Online (https://www.genealogieonline.nl/mitchell-stewart-tree/P777.php : accessed February 12, 2026), "Peter Mork (1883-1958)".
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