The temperature on February 5, 1884 was about 8.1 °C. The air pressure was 2 kgf/m2 and came mainly from the west-southwest. The airpressure was 77 cm mercury. The atmospheric humidity was 86%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
February 19 » More than sixty tornadoes strike the Southern United States, one of the largest tornado outbreaks in U.S. history.
April 20 » Pope Leo XIII publishes the encyclical Humanum genus.
May 31 » The arrival at Plymouth of Tāwhiao, King of Maoris, to claim the protection of Queen Victoria.
June 16 » The first purpose-built roller coaster, LaMarcus Adna Thompson's "Switchback Railway", opens in New York's Coney Island amusement park.
December 6 » The Washington Monument in Washington, D.C., is completed.
December 10 » Mark Twain's Adventures of Huckleberry Finn is published.
Day of death September 18, 1961
The temperature on September 18, 1961 was between 15.1 °C and 24.1 °C and averaged 18.8 °C. There was 9.8 hours of sunshine (78%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
January 3 » The SL-1 nuclear reactor is destroyed by a steam explosion in the only reactor incident in the United States to cause immediate fatalities.
January 24 » Goldsboro B-52 crash: A bomber carrying two H-bombs breaks up in mid-air over North Carolina. The uranium core of one weapon remains lost.
January 25 » 101 Dalmatians premiered from Walt Disney Productions.
March 9 » Sputnik 9 successfully launches, carrying a dog and a human dummy, and demonstrating that the Soviet Union was ready to begin human spaceflight.
June 4 » Cold War: In the Vienna summit, the Soviet premier Nikita Khrushchev sparks the Berlin Crisis by threatening to sign a separate peace treaty with East Germany and ending American, British and French access to East Berlin.
September 18 » U.N. Secretary-General Dag Hammarskjöld dies in an air crash while attempting to negotiate peace in the Katanga region of the Democratic Republic of the Congo.
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/I200266.php : accessed October 23, 2026), "Klaas de Vries (1884-1961)".
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