The temperature on April 28, 1947 was between 8.1 °C and 13.4 °C and averaged 10.4 °C. There was 0.4 mm of rain during 0.3 hours. There was 3.9 hours of sunshine (27%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the west. Source: KNMI
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 15 » Typhoon Kathleen hit the Kantō region in Japan killing 1,077.
October 1 » The North American F-86 Sabre flies for the first time.
October 5 » President Truman makes the first televised Oval Office address.
October 30 » The General Agreement on Tariffs and Trade (GATT), the foundation of the World Trade Organization (WTO), is founded.
November 17 » American scientists John Bardeen and Walter Houser Brattain observe the basic principles of the transistor, a key element for the electronics revolution of the 20th century.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I445348.php : accessed January 25, 2026), "NN van Laar (1947)".
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