The temperature on August 18, 1867 was about 20.8 °C. The air pressure was 6 kgf/m2 and came mainly from the southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 72%. 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).
February 17 » The first ship passes through the Suez Canal.
March 1 » Nebraska becomes the 37th U.S. state; Lancaster, Nebraska is renamed Lincoln and becomes the state capital.
May 3 » The Hudson's Bay Company gives up all claims to Vancouver Island.
July 17 » Harvard School of Dental Medicine is established in Boston, Massachusetts. It is the first dental school in the U.S. that is affiliated with a university.
August 28 » The United States takes possession of the (at this point unoccupied) Midway Atoll.
November 23 » The Manchester Martyrs are hanged in Manchester, England, for killing a police officer while freeing two Irish Republican Brotherhood members from custody.
Day of death May 21, 1868
The temperature on May 21, 1868 was about 16.3 °C. There was 0.2 mm of rain. The air pressure was 7 kgf/m2 and came mainly from the west. The airpressure was 76 cm mercury. The atmospheric humidity was 80%. 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).
June 23 » Christopher Latham Sholes received a patent for an invention he called the "Type-Writer".
July 9 » The 14th Amendment to the United States Constitution is ratified, guaranteeing African Americans full citizenship and all persons in the United States due process of law.
July 25 » The Wyoming Territory is established.
November 30 » A statue of King Charles XII of Sweden is inaugurated in Stockholm's Kungsträdgården.
December 9 » 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.
December 24 » The Greek Presidential Guard is established as the royal escort by King George I.
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/I48691.php : accessed October 14, 2026), "Jan Wychers (1867-1868)".
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