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 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.
April 1 » The only mutiny in the history of the Royal New Zealand Navy begins.
August 7 » The Bombay Municipal Corporation formally takes over the Bombay Electric Supply and Transport (BEST).
November 2 » In California, designer Howard Hughes performs the maiden (and only) flight of the Hughes H-4 Hercules (also known as the "Spruce Goose"), the largest fixed-wing aircraft ever built.
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: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I219448.php : accessed March 15, 2026), "Adrianus Jacobus Gerardus Maria Havermans (1947-)".
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