The temperature on December 6, 1963 was between -3.0 °C and 1.5 °C and averaged -1.3 °C. There was 0.1 mm of rain. There was 5.9 hours of sunshine (74%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
January 22 » The Élysée Treaty of cooperation between France and Germany is signed by Charles de Gaulle and Konrad Adenauer.
June 16 » Soviet Space Program: Vostok 6 mission: Cosmonaut Valentina Tereshkova becomes the first woman in space.
June 30 » Ciaculli bombing: a car bomb, intended for Mafia boss Salvatore Greco, kills seven police officers and military personnel near Palermo.
July 1 » ZIP codes are introduced for United States mail.
August 24 » Buddhist crisis: As a result of the Xá Lợi Pagoda raids, the US State Department cables the United States Embassy, Saigon to encourage Army of the Republic of Vietnam generals to launch a coup against President Ngô Đình Diệm if he did not remove his brother Ngô Đình Nhu.
August 31 » Crown Colony of North Borneo (now Sabah) achieves self governance.
When copying data from this family tree, please include a reference to the origin: Thijs J. van Eyck, "Klein Eyckenstein", database, Genealogy Online (https://www.genealogieonline.nl/klein-eyckenstein/I3367.php : accessed February 25, 2026), "Willem Leeuwenkamp (± 1910-1963)".
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