The temperature on September 14, 1889 was about 15.7 °C. The air pressure was 10 kgf/m2 and came mainly from the north-northwest. The airpressure was 77 cm mercury. The atmospheric humidity was 70%. Source: KNMI
January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
January 30 » Archduke Crown Prince Rudolf of Austria, heir to the Austro-Hungarian crown, is found dead with his mistress Baroness Mary Vetsera in the Mayerling.
March 23 » The Ahmadiyya Muslim Community is established by Mirza Ghulam Ahmad in Qadian, British India.
May 31 » Johnstown Flood: Over 2,200 people die after a dam fails and sends a 60-foot (18-meter) wall of water over the town of Johnstown, Pennsylvania.
August 4 » The Great Fire of Spokane, Washington destroys some 32 blocks of the city, prompting a mass rebuilding project.
October 24 » Henry Parkes delivers the Tenterfield Oration, effectively starting the federation process in Australia.
Day of marriage February 28, 1917
The temperature on February 28, 1917 was between -0.2 °C and 4.7 °C and averaged 2.9 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-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 27 » Pope Benedict XV promulgates the 1917 Code of Canon Law, the first comprehensive codification of Catholic canon law in the legal history of the Catholic Church.
June 5 » World War I: Conscription begins in the United States as "Army registration day".
October 15 » World War I: Dutch dancer Mata Hari is executed by France for espionage.
October 31 » World War I: Battle of Beersheba: The "last successful cavalry charge in history".
November 26 » The National Hockey League is formed, with the Montreal Canadiens, Montreal Wanderers, Ottawa Senators, Quebec Bulldogs, and Toronto Arenas as its first teams.
December 2 » World War I: Russia and the Central Powers sign an armistice at Brest-Litovsk, and peace talks leading to the Treaty of Brest-Litovsk begin.
Day of death January 10, 1971
The temperature on January 10, 1971 was between -0.9 °C and 7.9 °C and averaged 2.5 °C. There was -0.1 mm of rain. There was 5.9 hours of sunshine (73%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
February 27 » Doctors in the first Dutch abortion clinic (the Mildredhuis in Arnhem) start performing artificially-induced abortions.
May 19 » Mars probe program: Mars 2 is launched by the Soviet Union.
June 7 » The Alcohol, Tobacco, and Firearms Division of the U.S. Internal Revenue Service raids the home of Ken Ballew for illegal possession of hand grenades.
June 7 » The United States Supreme Court overturns the conviction of Paul Cohen for disturbing the peace, setting the precedent that vulgar writing is protected under the First Amendment to the United States Constitution.
July 5 » The Twenty-sixth Amendment to the United States Constitution, lowering the voting age from 21 to 18 years, is formally certified by President Richard Nixon.
October 12 » The 2,500 year celebration of the Persian Empire begins.
When copying data from this family tree, please include a reference to the origin: Roelof, "Family tree Knibbe", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-knibbe/I10.php : accessed February 19, 2026), "Pietertje dv Pieter en Johanna Hendrika te Bokkel Hoogvliet (1889-1971)".
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