The temperature on March 25, 1957 was between 3.2 °C and 12.8 °C and averaged 9.1 °C. There was 0.3 mm of rain during 1.2 hours. There was 4.6 hours of sunshine (37%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
March 4 » The S&P 500 stock market index is introduced, replacing the S&P 90.
March 9 » The 8.6 Mw Andreanof Islands earthquake shakes the Aleutian Islands, causing over $5 million in damage from ground movement and a destructive tsunami.
April 6 » Greek shipping tycoon Aristotle Onassis buys the Hellenic National Airlines (TAE) and founds Olympic Airlines.
July 6 » John Lennon and Paul McCartney meet for the first time, as teenagers at Woolton Fete, three years before forming the Beatles.
September 19 » Plumbbob Rainier becomes the first nuclear explosion to be entirely contained underground, producing no fallout.
October 10 » The Windscale fire results in Britain's worst nuclear accident.
When copying data from this family tree, please include a reference to the origin: A. Hakkert , "Family tree Hakkert", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-hakkert/I5532.php : accessed February 28, 2026), "Gerrit Jan Hakkert (± 1873-1957)".
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