The temperature on June 30, 1947 was between 14.1 °C and 23.7 °C and averaged 17.7 °C. There was 7.6 hours of sunshine (46%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
February 21 » In New York City, Edwin Land demonstrates the first "instant camera", the Polaroid Land Camera, to a meeting of the Optical Society of America.
March 8 » Thirteen thousand troops of the Republic of China Army arrive in Taiwan after the February 28 Incident and launch crackdowns which kill thousands of people, including many elites. This turns into a major root of the Taiwan independence movement.
March 17 » First flight of the B-45 Tornado strategic bomber.
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.
October 20 » The House Un-American Activities Committee begins its investigation into Communist infiltration of the Hollywood film industry, resulting in a blacklist that prevents some from working in the industry for years.
November 17 » The Screen Actors Guild implements an anti-Communist loyalty oath.
When copying data from this family tree, please include a reference to the origin: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I16741.php : accessed February 16, 2026), "Johannes Fennema (1929-1947)".
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