The temperature on February 20, 1947 was between -6.3 °C and -4.9 °C and averaged -5.9 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the east. Source: KNMI
April 9 » The Journey of Reconciliation, the first interracial Freedom Ride begins through the upper South in violation of Jim Crow laws. The riders wanted enforcement of the United States Supreme Court's 1946 Irene Morgan decision that banned racial segregation in interstate travel.
April 30 » In Nevada, Boulder Dam is renamed Hoover Dam.
July 6 » The AK-47 goes into production in the Soviet Union.
November 2 » In California, designer Howard Hughes performs the maiden (and only) flight of the Hughes H-4 Hercules (also known as the "Spruce Goose"), the largest fixed-wing aircraft ever built.
November 20 » The Princess Elizabeth marries Lieutenant Philip Mountbatten, who becomes the Duke of Edinburgh, at Westminster Abbey in London.
December 16 » William Shockley, John Bardeen and Walter Brattain build the first practical point-contact transistor.
Day of death April 18, 1955
The temperature on April 18, 1955 was between 2.2 °C and 11.1 °C and averaged 6.6 °C. There was 9.6 hours of sunshine (68%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
May 18 » Operation Passage to Freedom, the evacuation of 310,000 Vietnamese civilians, soldiers and non-Vietnamese members of the French Army from communist North Vietnam to South Vietnam following the end of the First Indochina War, ends.
July 9 » The Russell–Einstein Manifesto calls for a reduction of the risk of nuclear warfare.
July 15 » Eighteen Nobel laureates sign the Mainau Declaration against nuclear weapons, later co-signed by thirty-four others.
August 28 » Black teenager Emmett Till is brutally murdered in Mississippi, galvanizing the nascent civil rights movement.
September 16 » A Zulu-class submarine becomes the first to launch a ballistic missile.
September 16 » The military coup to unseat President Juan Perón of Argentina is launched at midnight.
When copying data from this family tree, please include a reference to the origin: J. Ham, "Family tree Ham", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ham/I85588.php : accessed January 16, 2026), "Jannetje Gerredina Jacobsen (± 1927-1955)".
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