The temperature on March 31, 1884 was about 16.1 °C. The air pressure was 5 kgf/m2 and came mainly from the south-southeast. The airpressure was 75 cm mercury. The atmospheric humidity was 51%. 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 13 » The Siege of Khartoum begins. It lasts until January 26, 1885.
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.
April 20 » Pope Leo XIII publishes the encyclical Humanum genus.
June 16 » The first purpose-built roller coaster, LaMarcus Adna Thompson's "Switchback Railway", opens in New York's Coney Island amusement park.
August 5 » The cornerstone for the Statue of Liberty is laid on Bedloe's Island (now Liberty Island) in New York Harbor.
Day of marriage May 22, 1909
The temperature on May 22, 1909 was between 11.2 °C and 26.3 °C and averaged 18.0 °C. There was 12.3 hours of sunshine (77%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
February 12 » The National Association for the Advancement of Colored People (NAACP) is founded.
March 31 » Serbia formally withdraws its opposition to Austro-Hungarian actions in the Bosnian Crisis.
April 9 » The U.S. Congress passes the Payne–Aldrich Tariff Act.
April 14 » A massacre is organized by the Ottoman Empire against the Armenian population of Cilicia.
June 26 » The Science Museum in London comes into existence as an independent entity.
August 19 » The first automobile race at the Indianapolis Motor Speedway.
Day of death April 1, 1959
The temperature on April 1, 1959 was between 2.6 °C and 12.6 °C and averaged 8.7 °C. There was 1.5 hours of sunshine (12%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 3 » Alaska is admitted as the 49th U.S. state.
June 14 » Dominican exiles depart from Cuba and land in the Dominican Republic to overthrow the totalitarian government of Rafael Trujillo. All but four are killed or executed.
July 7 » Venus occults the star Regulus. This rare event is used to determine the diameter of Venus and the structure of the Venusian atmosphere.
August 17 » Quake Lake is formed by the magnitude 7.5 1959 Hebgen Lake earthquake near Hebgen Lake in Montana.
October 7 » The Soviet probe Luna 3 transmits the first-ever photographs of the far side of the Moon.
December 3 » The current flag of Singapore is adopted, six months after Singapore became self-governing within the British Empire.
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/I167728.php : accessed October 12, 2026), "Sybe Postma (1884-1959)".
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