The temperature on June 30, 1963 was between 11.6 °C and 21.8 °C and averaged 16.3 °C. There was 0.5 mm of rain during 0.5 hours. There was 6.2 hours of sunshine (37%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
April 11 » Pope John XXIII issues Pacem in terris, the first encyclical addressed to all Christians instead of only Catholics, and which described the conditions for world peace in human terms.
July 26 » Syncom 2, the world's first geosynchronous satellite, is launched from Cape Canaveral on a Delta B booster.
August 28 » March on Washington for Jobs and Freedom: The Reverend Martin Luther King, Jr. gives his I Have a Dream speech.
September 4 » Swissair Flight 306 crashes near Dürrenäsch, Switzerland, killing all 80 people on board.
October 31 » A propane tank explosion at the Indiana State Fair Coliseum (now the Indiana Farmers Coliseum) in Indianapolis kills 74 people and injures another 400 during an ice skating show.
November 18 » The first push-button telephone goes into service.
When copying data from this family tree, please include a reference to the origin: Jaap Geensen, "Geensen database", database, Genealogy Online (https://www.genealogieonline.nl/geensen-database/I3457.php : accessed September 28, 2026), "Marinus Jan Witte (± 1908-1963)".
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