The temperature on March 29, 1957 was between 3.9 °C and 10.1 °C and averaged 7.7 °C. There was 4.5 hours of sunshine (35%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
January 31 » Eight people (5 total crew from 2 aircraft and 3 on the ground) in Pacoima, California are killed following the mid-air collision between a Douglas DC-7 airliner and a Northrop F-89 Scorpion fighter jet.
April 9 » The Suez Canal in Egypt is cleared and opens to shipping following the Suez Crisis.
May 1 » Thirty-four people are killed when a Vickers Viking airliner crashes in Hampshire, England.
September 5 » Cuban Revolution: Fulgencio Batista bombs the revolt in Cienfuegos.
October 10 » The Windscale fire results in Britain's worst nuclear accident.
December 20 » The initial production version of the Boeing 707 makes its first flight.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I10384.php : accessed February 19, 2026), "Dirk Kouwen (1957-2020)".
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