The temperature on April 4, 1947 was between 2.0 °C and 11.0 °C and averaged 6.8 °C. There was 6.2 mm of rain during 3.7 hours. There was 0.2 hours of sunshine (2%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
April 9 » The Journey of Reconciliation, the first interracial Freedom Ride begins through the upper South in violation of Jim Crow laws. The riders wanted enforcement of the United States Supreme Court's 1946 Irene Morgan decision that banned racial segregation in interstate travel.
May 1 » Portella della Ginestra massacre against May Day celebrations in Sicily by the bandit and separatist leader Salvatore Giuliano where 11 persons are killed and 33 wounded.
July 1 » The Philippine Air Force is established.
September 9 » First case of a computer bug being found: A moth lodges in a relay of a Harvard Mark II computer at Harvard University.
October 14 » Chuck Yeager becomes the first person to exceed the speed of sound.
December 6 » The Everglades National Park in Florida is dedicated.
When copying data from this family tree, please include a reference to the origin: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I199856.php : accessed January 4, 2026), "Adrianus Antonius Petronella Maria van Engelen (1947-1947)".
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