The temperature on December 2, 1893 was about -0.1 °C. There was 0.2 mm of rain. The airpressure was 77 cm mercury. The atmospheric humidity was 96%. Source: KNMI
In The Netherlands , there was from August 21, 1891 to May 9, 1894 the cabinet Van Tienhoven, with Mr. G. van Tienhoven (unie-liberaal) as prime minister.
January 6 » The Washington National Cathedral is chartered by Congress. The charter is signed by President Benjamin Harrison.
January 21 » The Tati Concessions Land, formerly part of Matabeleland, is formally annexed to the Bechuanaland Protectorate, now Botswana.
June 13 » Grover Cleveland notices a rough spot in his mouth and on July 1 undergoes secret, successful surgery to remove a large, cancerous portion of his jaw; the operation was not revealed to the public until 1917, nine years after the president's death.
June 22 » The Royal Navy battleship HMSCamperdown accidentally rams the British Mediterranean Fleet flagship HMSVictoria which sinks taking 358 crew with her, including the fleet's commander, Vice-Admiral Sir George Tryon.
July 11 » The first cultured pearl is obtained by Kōkichi Mikimoto.
November 12 » Abdur Rahman Khan accepts the Durand Line as the border between Afghanistan and the British Raj.
Day of marriage May 17, 1919
The temperature on May 17, 1919 was between 6.6 °C and 21.9 °C and averaged 14.9 °C. There was 13.6 hours of sunshine (86%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 15 » Great Molasses Flood: A wave of molasses released from an exploding storage tank sweeps through Boston, Massachusetts, killing 21 and injuring 150.
January 18 » Ignacy Jan Paderewski becomes Prime Minister of the newly independent Poland.
January 21 » A revolutionary Irish parliament is founded and declares the independence of the Irish Republic. One of the first engagements of the Irish War of Independence takes place.
July 13 » The British airship R34 lands in Norfolk, England, completing the first airship return journey across the Atlantic in 182 hours of flight.
November 11 » Latvian forces defeat the West Russian Volunteer Army at Riga in the Latvian War of Independence.
December 23 » Sex Disqualification (Removal) Act 1919 becomes law in the United Kingdom.
Day of death April 9, 1966
The temperature on April 9, 1966 was between 7.8 °C and 16.6 °C and averaged 12.1 °C. There was 6.6 mm of rain during 8.7 hours. There was 2.0 hours of sunshine (15%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
June 8 » An F-104 Starfighter collides with XB-70 Valkyrie prototype no. 2, destroying both aircraft during a photo shoot near Edwards Air Force Base. Joseph A. Walker, a NASA test pilot, and Carl Cross, a United States Air Force test pilot, are both killed.
June 8 » The National Football League and American Football League announced a merger effective in 1970.
September 16 » The Metropolitan Opera House opens at Lincoln Center in New York City with the world premiere of Samuel Barber's opera Antony and Cleopatra.
November 11 » NASA launches Gemini 12.
December 26 » The first Kwanzaa is celebrated by Maulana Karenga, the chair of Black Studies at California State University, Long Beach.
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/I102279.php : accessed October 13, 2026), "Hendrik Koop (1893-1966)".
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