The temperature on June 28, 1947 was between 17.3 °C and 34.0 °C and averaged 26.6 °C. There was 12.5 hours of sunshine (75%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. 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 25 » Thomas Goldsmith Jr. files a patent for a "Cathode Ray Tube Amusement Device", the first ever electronic game.
June 23 » The United States Senate follows the United States House of Representatives in overriding U.S. President Harry S. Truman's veto of the Taft–Hartley Act.
August 4 » The Supreme Court of Japan 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.
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: Gert Pieters, "Family tree Koops", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-koops/I167.php : accessed December 29, 2025), "Koops (1947)".
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