The temperature on June 17, 1861 was about 19.6 °C. The air pressure was 2 kgf/m2 and came mainly from the north-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 57%. Source: KNMI
From February 23, 1860 till March 14, 1861 the Netherlands had a cabinet Van Hall - Van Heemstra with the prime ministers Mr. F.A. baron Van Hall (conservatief-liberaal) and Mr. S. baron Van Heemstra (liberaal).
From March 14, 1861 till January 31, 1862 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Loudon with the prime ministers Mr. J.P.P. baron Van Zuijlen van Nijevelt (conservatief-liberaal) and Mr. J. Loudon (liberaal).
March 30 » Discovery of the chemical elements: Sir William Crookes announces his discovery of thallium.
April 12 » American Civil War: Battle of Fort Sumter. The war begins with Confederate forces firing on Fort Sumter, in the harbor of Charleston, South Carolina.
April 17 » The state of Virginia's secession convention votes to secede from the United States, later becoming the eighth state to join the Confederate States of America.
August 5 » The United States Army abolishes flogging.
August 19 » First ascent of Weisshorn, fifth highest summit in the Alps.
November 7 » The first Melbourne Cup horse race is held in Melbourne, Australia.
Day of death December 18, 1930
The temperature on December 18, 1930 was between -1.2 and 1.9 °C. There was 4.2 mm of rain during 1.8 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 3 » Communist Party of Vietnam is founded at a "Unification Conference" held in Kowloon, British Hong Kong.
February 18 » While studying photographs taken in January, Clyde Tombaugh discovers Pluto.
May 24 » Amy Johnson lands in Darwin, Northern Territory, becoming the first woman to fly solo from England to Australia (she left on May 5 for the 11,000 mile flight).
May 27 » The 1,046 feet (319m) Chrysler Building in New York City, the tallest man-made structure at the time, opens to the public.
June 21 » One-year conscription comes into force in France.
December 2 » Great Depression: In a State of the Union message, U.S. President Herbert Hoover proposes a $150 million (equivalent to $2,296,000,000 in 2019) public works program to help generate jobs and stimulate the economy.
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/I55207.php : accessed October 2, 2026), "Libbe Sytsema (1861-1930)".
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