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
January 22 » Israel withdraws from the Sinai Peninsula.
June 10 » John Diefenbaker leads the Progressive Conservative Party of Canada to a stunning upset in the 1957 Canadian federal election, ending 22 years of Liberal Party government.
October 14 » At least 81 people are killed in the most devastating flood in the history of the Spanish city of Valencia.
October 29 » Israel's prime minister David Ben-Gurion and five of his ministers are injured when Moshe Dwek throws a grenade into Israel's Knesset.
November 7 » Cold War: The Gaither Report calls for more American missiles and fallout shelters.
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: 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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