The temperature on February 26, 1878 was about 7.2 °C. There was 0.5 mm of rain. The air pressure was 3 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 94%. Source: KNMI
In The Netherlands , there was from November 3, 1877 to August 20, 1879 the cabinet Kappeijne van de Coppello, with Mr. J. Kappeijne van de Coppello (liberaal) as prime minister.
February 18 » John Tunstall is murdered by outlaw Jesse Evans, sparking the Lincoln County War in Lincoln County, New Mexico.
May 14 » The last witchcraft trial held in the United States begins in Salem, Massachusetts, after Lucretia Brown, an adherent of Christian Science, accused Daniel Spofford of attempting to harm her through his mental powers.
June 4 » Cyprus Convention: The Ottoman Empire cedes Cyprus to the United Kingdom but retains nominal title.
June 10 » League of Prizren is established, to oppose the decisions of the Congress of Berlin and the Treaty of San Stefano, as a consequence of which the Albanian lands in the Balkans were being partitioned and given to the neighbor states of Serbia, Montenegro, Bulgaria, and Greece.
June 15 » Eadweard Muybridge takes a series of photographs to prove that all four feet of a horse leave the ground when it runs; the study becomes the basis of motion pictures.
December 18 » The Al-Thani family become the rulers of the state of Qatar.
Day of death June 17, 1956
The temperature on June 17, 1956 was between 9.9 °C and 16.7 °C and averaged 12.7 °C. There was 8.0 mm of rain during 7.8 hours. There was 0.2 hours of sunshine (1%). The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
January 8 » Operation Auca: Five U.S. missionaries are killed by the Huaorani of Ecuador shortly after making contact with them.
March 9 » Soviet forces suppress mass demonstrations in the Georgian SSR, reacting to Nikita Khrushchev's de-Stalinization policy.
July 13 » The Dartmouth workshop is the first conference on artificial intelligence.
July 25 » Forty-five miles south of Nantucket Island, the Italian ocean liner SSAndrea Doria collides with the MSStockholm in heavy fog and sinks the next day, killing 51.
July 26 » Following the World Bank's refusal to fund building the Aswan Dam, Egyptian leader Gamal Abdel Nasser nationalizes the Suez Canal, sparking international condemnation.
December 4 » The Million Dollar Quartet (Elvis Presley, Jerry Lee Lewis, Carl Perkins, and Johnny Cash) get together at Sun Studio for the first and last time.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I19767.php : accessed February 15, 2026), "Catharina Valkering (1878-1956)".
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