February 16 » Iceland's first football club, Knattspyrnufélag Reykjavíkur, is founded.
March 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
June 7 » American Temperance crusader Carrie Nation begins her campaign of vandalizing alcohol-serving establishments by destroying the inventory in a saloon in Kiowa, Kansas.
July 29 » The First Hague Convention is signed.
September 13 » Mackinder, Ollier and Brocherel make the first ascent of Batian (5,199 m - 17,058ft), the highest peak of Mount Kenya.
Day of death May 11, 1964
The temperature on May 11, 1964 was between 6.3 °C and 19.0 °C and averaged 13.0 °C. There was -0.1 hours of sunshine (0%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
February 27 » The Government of Italy asks for help to keep the Leaning Tower of Pisa from toppling over.
March 14 » Jack Ruby is convicted of killing Lee Harvey Oswald, the assumed assassin of John F. Kennedy.
June 12 » Anti-apartheid activist and ANC leader Nelson Mandela is sentenced to life in prison for sabotage in South Africa.
August 19 » Syncom 3, the first geostationary communication satellite, was launched.
November 28 » Vietnam War: National Security Council members agree to recommend that U.S. President Lyndon B. Johnson adopt a plan for a two-stage escalation of bombing in North Vietnam.
December 14 » American Civil Rights Movement: Heart of Atlanta Motel v. United States: The Supreme Court of the United States rules that Congress can use the Constitution's Commerce Clause to fight discrimination.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I16482.php : accessed March 16, 2026), "Stijntje Kliffen (1899-1964)".
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