The temperature on September 9, 1947 was between 10.5 °C and 19.6 °C and averaged 15.6 °C. There was 0.1 mm of rain during 0.2 hours. There was 7.5 hours of sunshine (57%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
January 1 » The Canadian Citizenship Act 1946 comes into effect, converting British subjects into Canadian citizens. Prime Minister William Lyon Mackenzie King becomes the first Canadian citizen.
January 3 » Proceedings of the U.S. Congress are televised for the first time.
June 5 » Cold War: Marshall Plan: In a speech at Harvard University, the United States Secretary of State George Marshall calls for economic aid to war-torn Europe.
October 14 » Chuck Yeager becomes the first person to exceed the speed of sound.
December 23 » The transistor is first demonstrated at Bell Laboratories.
December 30 » Cold War: King Michael I of Romania is forced to abdicate by the Soviet Union-backed Communist government of Romania.
When copying data from this family tree, please include a reference to the origin: P. van der Stoop, "Family tree Van der Stoop", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-der-stoop/I57.php : accessed February 7, 2026), "Wilhelmina Alida Elisabeth Marina "Willy" Wolvers (1947-2020)".
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