The temperature on April 18, 1947 was between 2.5 °C and 16.3 °C and averaged 9.9 °C. There was 11.6 hours of sunshine (83%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
February 23 » International Organization for Standardization is founded.
March 25 » An explosion in a coal mine in Centralia, Illinois kills 111.
April 28 » Thor Heyerdahl and five crew mates set out from Peru on the Kon-Tiki to demonstrate that Peruvian natives could have settled Polynesia.
June 25 » The Diary of a Young Girl (better known as The Diary of Anne Frank) is published.
August 7 » Thor Heyerdahl's balsa wood raft, the Kon-Tiki, smashes into the reef at Raroia in the Tuamotu Islands after a 101-day, 7,000 kilometres (4,300mi) journey across the Pacific Ocean in an attempt to prove that pre-historic peoples could have traveled from South America.
September 18 » The National Security Council and the Central Intelligence Agency are established in the United States by the National Security Act. It also establishes the Air Force as an equal partner of the Army and Navy.
When copying data from this family tree, please include a reference to the origin: Dave Aaron, "Carter-Aaron tree", database, Genealogy Online (https://www.genealogieonline.nl/carter-aaron-tree/I504602.php : accessed March 5, 2026), "George Cadman (1874-1947)".
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