The temperature on December 23, 1917 was between -8.7 °C and -3.2 °C and averaged -5.9 °C. There was 0.1 mm of rain. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
May 13 » Three children report the first apparition of Our Lady of Fátima in Fátima, Portugal.
June 7 » World War I: Battle of Messines: Allied soldiers detonate a series of mines underneath German trenches at Messines Ridge, killing 10,000 German troops.
July 31 » World War I: The Battle of Passchendaele begins near Ypres in West Flanders, Belgium.
Day of marriage November 8, 1947
The temperature on November 8, 1947 was between 6.6 °C and 12.1 °C and averaged 9.1 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 6 » Pan American Airlines becomes the first commercial airline to offer a round-the-world ticket.
February 10 » The Paris Peace Treaties are signed by Italy, Romania, Hungary, Bulgaria, Finland and the Allies of World War II.
March 1 » The International Monetary Fund begins financial operations.
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.
June 10 » Saab produces its first automobile.
November 17 » The Screen Actors Guild implements an anti-Communist loyalty oath.
Day of death June 12, 1967
The temperature on June 12, 1967 was between 6.2 °C and 18.9 °C and averaged 13.8 °C. There was 12.6 hours of sunshine (76%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
January 23 » Diplomatic relations between the Soviet Union and Ivory Coast are established.
May 13 » Dr. Zakir Husain becomes the third President of India. He is the first Muslim President of the Indian Union. He holds this position until August 24, 1969.
June 17 » Nuclear weapons testing: China announces a successful test of its first thermonuclear weapon.
October 2 » Thurgood Marshall is sworn in as the first African-American justice of the United States Supreme Court.
October 10 » The Outer Space Treaty comes into force.
November 7 » Carl B. Stokes is elected as Mayor of Cleveland, Ohio, becoming the first African American mayor of a major American city.
Day of burial June 16, 1967
The temperature on June 16, 1967 was between 10.9 °C and 20.1 °C and averaged 15.3 °C. There was 11.7 hours of sunshine (70%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
January 29 » The "ultimate high" of the hippie era, the Mantra-Rock Dance, takes place in San Francisco and features Janis Joplin, Grateful Dead, and Allen Ginsberg.
April 9 » The first Boeing 737 (a 100 series) makes its maiden flight.
April 24 » Vietnam War: American General William Westmoreland says in a news conference that the enemy had "gained support in the United States that gives him hope that he can win politically that which he cannot win militarily".
July 24 » During an official state visit to Canada, French President Charles de Gaulle declares to a crowd of over 100,000 in Montreal: Vive le Québec libre! ("Long live free Quebec!"); the statement angered the Canadian government and many Anglophone Canadians.
September 3 » Dagen H in Sweden: Traffic changes from driving on the left to driving on the right overnight.
November 28 » The first pulsar (PSR B1919+21, in the constellation of Vulpecula) is discovered by two astronomers Jocelyn Bell Burnell and Antony Hewish.
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/I7611.php : accessed February 1, 2026), "Willard Walter Knippenberg (1917-1967)".
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