The temperature on April 20, 1868 was about 15.1 °C. There was 1 mm of rain. The air pressure was 22 kgf/m2 and came mainly from the southwest. The airpressure was 74 cm mercury. The atmospheric humidity was 53%. Source: KNMI
From June 1, 1866 till June 4, 1868 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Heemskerk with the prime ministers Mr. J.P.J.A. graaf Van Zuijlen van Nijevelt (AR) and Mr. J. Heemskerk Azn. (conservatief).
From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
February 24 » Andrew Johnson becomes the first President of the United States to be impeached by the United States House of Representatives. He is later acquitted in the Senate.
May 14 » Boshin War: The Battle of Utsunomiya Castle ends as former Tokugawa shogunate forces withdraw northward.
May 16 » The United States Senate fails to convict President Andrew Johnson by one vote.
August 18 » French astronomer Pierre Janssen discovers helium.
November 2 » Time zone: New Zealand officially adopts a standard time to be observed nationally.
December 10 » The first traffic lights are installed, outside the Palace of Westminster in London. Resembling railway signals, they use semaphore arms and are illuminated at night by red and green gas lamps.
Day of death March 21, 1869
The temperature on March 21, 1869 was about 10.5 °C. The air pressure was 13 kgf/m2 and came mainly from the east-northeast. The airpressure was 75 cm mercury. The atmospheric humidity was 37%. Source: KNMI
From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
April 17 » Morelos is admitted as the 27th state of Mexico.
April 28 » Chinese and Irish laborers for the Central Pacific Railroad working on the First Transcontinental Railroad lay ten miles of track in one day, a feat which has never been matched.
August 29 » The Mount Washington Cog Railway opens, making it the world's first mountain-climbing rack railway.
October 5 » The Hennepin Island tunnel collapses during construction, nearly destroying St. Anthony Falls.
October 16 » Girton College, Cambridge is founded, becoming England's first residential college for women.
November 17 » In Egypt, the Suez Canal, linking the Mediterranean Sea with the Red Sea, is inaugurated.
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/I48298.php : accessed October 17, 2026), "Hendrik Poelstra (1868-1869)".
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