The temperature on February 26, 1884 was about 2.2 °C. The air pressure was 2 kgf/m2 and came mainly from the west-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 93%. 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.
January 4 » The Fabian Society is founded in London, United Kingdom.
March 27 » A mob in Cincinnati, Ohio, attacks members of a jury which had returned a verdict of manslaughter in what was seen as a clear case of murder; over the next few days the mob would riot and eventually destroy the courthouse.
May 31 » The arrival at Plymouth of Tāwhiao, King of Maoris, to claim the protection of Queen Victoria.
October 6 » The Naval War College of the United States is founded in Rhode Island.
October 13 » The International Meridian Conference establishes the meridian of the Greenwich Observatory as the prime meridian.
December 6 » The Washington Monument in Washington, D.C., is completed.
Day of marriage May 20, 1910
The temperature on May 20, 1910 was between 14.0 °C and 29.0 °C and averaged 21.1 °C. There was 11.4 hours of sunshine (72%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
March 28 » Henri Fabre becomes the first person to fly a seaplane, the Fabre Hydravion, after taking off from a water runway near Martigues, France.
June 17 » Aurel Vlaicu pilots an A. Vlaicu nr. 1 on its first flight.
June 19 » The first Father's Day is celebrated in Spokane, Washington.
October 15 » Airship America is launched from New Jersey in the first attempt to cross the Atlantic by a powered aircraft.
October 22 » Hawley Harvey Crippen (the first felon to be arrested with the help of radio) is convicted of poisoning his wife.
November 20 » Mexican Revolution: Francisco I. Madero issues the Plan de San Luis Potosí, denouncing Mexican President Porfirio Díaz, calling for a revolution to overthrow the government of Mexico, effectively starting the Mexican Revolution.
Day of death November 20, 1965
The temperature on November 20, 1965 was between -2.4 °C and -0.9 °C and averaged -1.7 °C. There was 6.1 mm of rain during 6.9 hours. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
February 18 » The Gambia becomes independent from the United Kingdom.
March 19 » The wreck of the SSGeorgiana, valued at over $50,000,000 and said to have been the most powerful Confederate cruiser, is discovered by teenage diver and pioneer underwater archaeologist E. Lee Spence, exactly 102 years after its destruction.
March 21 » Dr. Martin Luther King, Jr. leads 3,200 people on the start of the third and finally successful civil rights march from Selma to Montgomery, Alabama.
April 9 » Astrodome opens. First indoor baseball game is played.
August 18 » Vietnam War: Operation Starlite begins: United States Marines destroy a Viet Cong stronghold on the Van Tuong peninsula in the first major American ground battle of the war.
December 9 » Kecksburg UFO incident: A fireball is seen from Michigan to Pennsylvania; witnesses report something crashing in the woods near Pittsburgh.
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/I194450.php : accessed October 13, 2026), "Pieter Posthumus (1884-1965)".
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