The temperature on February 23, 1875 was about 1.2 °C. The air pressure was 8 kgf/m2 and came mainly from the east-southeast. The airpressure was 76 cm mercury. The atmospheric humidity was 51%. Source: KNMI
From August 27, 1874 till November 3, 1877 the Netherlands had a cabinet Heemskerk - Van Lijnden van Sandenburg with the prime ministers Mr. J. Heemskerk Azn. (conservatief) and Mr. C.Th. baron Van Lijnden van Sandenburg (AR).
January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
March 13 » British forces occupy Bloemfontein, Orange Free State, during the Second Boer War.
March 24 » Mayor of New York City Robert Anderson Van Wyck breaks ground for a new underground "Rapid Transit Railroad" that would link Manhattan and Brooklyn.
April 15 » Philippine–American War: Filipino guerrillas launch a surprise attack on U.S. infantry and begin a four-day siege of Catubig, Philippines.
May 22 » The Associated Press is formed in New York City as a non-profit news cooperative.
July 9 » The Governor of Shanxi province in North China orders the execution of 45 foreign Christian missionaries and local church members, including children.
Day of death October 13, 1959
The temperature on October 13, 1959 was between 6.5 °C and 16.0 °C and averaged 11.4 °C. There was 0.4 hours of sunshine (4%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
February 3 » Rock and roll musicians Buddy Holly, Ritchie Valens, and J. P. "The Big Bopper" Richardson are killed in a plane crash near Clear Lake, Iowa.
February 19 » The United Kingdom grants Cyprus independence, which is formally proclaimed on August 16, 1960.
February 20 » The Avro Arrow program to design and manufacture supersonic jet fighters in Canada is cancelled by the Diefenbaker government amid much political debate.
March 9 » The Barbie doll makes its debut at the American International Toy Fair in New York.
August 31 » A parcel bomb sent by Ngô Đình Nhu, younger brother and chief adviser of South Vietnamese President Ngô Đình Diệm, fails to kill King Norodom Sihanouk of Cambodia.
September 26 » Typhoon Vera, the strongest typhoon to hit Japan in recorded history, makes landfall, killing 4,580 people and leaving nearly 1.6 million others homeless.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I84766.php : accessed December 28, 2025), "Willem Koops (1875-1959)".
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