The temperature on January 23, 1963 was between -9.5 °C and -0.4 °C and averaged -3.8 °C. There was 1.7 hours of sunshine (20%). The partly clouded was. Source: KNMI
April 24 » Marriage of Princess Alexandra of Kent to Angus Ogilvy at Westminster Abbey in London.
May 19 » The New York Post Sunday Magazine publishes Martin Luther King Jr.'s Letter from Birmingham Jail.
June 11 » American Civil Rights Movement: Governor of Alabama George Wallace defiantly stands at the door of Foster Auditorium at the University of Alabama in an attempt to block two black students, Vivian Malone and James Hood, from attending that school. Later in the day, accompanied by federalized National Guard troops, they are able to register.
June 16 » In an attempt to resolve the Buddhist crisis in South Vietnam, a Joint Communique was signed between President Ngo Dinh Diem and Buddhist leaders.
June 30 » Ciaculli bombing: a car bomb, intended for Mafia boss Salvatore Greco, kills seven police officers and military personnel near Palermo.
July 19 » Joe Walker flies a North American X-15 to a record altitude of 106,010 meters (347,800 feet) on X-15 Flight 90. Exceeding an altitude of 100km, this flight qualifies as a human spaceflight under international convention.
When copying data from this family tree, please include a reference to the origin: Van Knippenberg, "Family tree Van Knippenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-knippenberg/I7450.php : accessed March 15, 2026), "William Louis Knippenberg (1918-1963)".
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