The temperature on July 17, 1957 was between 8.7 °C and 21.7 °C and averaged 16.4 °C. There was 0.7 mm of rain during 0.6 hours. There was 9.7 hours of sunshine (60%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
February 18 » Kenyan rebel leader Dedan Kimathi is executed by the British colonial government.
March 4 » The S&P 500 stock market index is introduced, replacing the S&P 90.
March 6 » Ghana becomes the first Sub-Saharan country to gain independence from the British.
August 28 » U.S. Senator Strom Thurmond begins a filibuster to prevent the Senate from voting on Civil Rights Act of 1957; he stopped speaking 24 hours and 18 minutes later, the longest filibuster ever conducted by a single Senator.
September 5 » Cuban Revolution: Fulgencio Batista bombs the revolt in Cienfuegos.
November 8 » Operation Grapple X, Round C1: The United Kingdom conducts its first successful hydrogen bomb test over Kiritimati in the Pacific.
When copying data from this family tree, please include a reference to the origin: Leen Schaap, "Database Schaap", database, Genealogy Online (https://www.genealogieonline.nl/database-schaap/I7676.php : accessed December 26, 2025), "Willemina Overgoor (1870-1957)".
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