The temperature on September 12, 1963 was between 10.5 °C and 19.4 °C and averaged 14.7 °C. There was 0.1 mm of rain. There was 7.8 hours of sunshine (60%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
January 8 » Leonardo da Vinci's Mona Lisa is exhibited in the United States for the first time, at the National Gallery of Art in Washington, D.C.
January 22 » The Élysée Treaty of cooperation between France and Germany is signed by Charles de Gaulle and Konrad Adenauer.
February 19 » The publication of Betty Friedan's The Feminine Mystique reawakens the feminist movement in the United States as women's organizations and consciousness raising groups spread.
May 30 » A protest against pro-Catholic discrimination during the Buddhist crisis is held outside South Vietnam's National Assembly, the first open demonstration during the eight-year rule of Ngo Dinh Diem.
June 30 » Ciaculli bombing: a car bomb, intended for Mafia boss Salvatore Greco, kills seven police officers and military personnel near Palermo.
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.
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/I98341.php : accessed February 6, 2026), "Sandy Rövekamp (1927-2007)".
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