The temperature on February 7, 1868 was about 7.0 °C. The air pressure was 5 kgf/m2 and came mainly from the southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 70%. 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).
August 18 » French astronomer Pierre Janssen discovers helium.
September 23 » Grito de Lares ("Lares Revolt") occurs in Puerto Rico against Spanish rule.
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 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.
December 11 » Paraguayan War: Brazilian troops defeat Paraguayan at the Battle of Avay.
December 24 » The Greek Presidential Guard is established as the royal escort by King George I.
Day of marriage May 18, 1889
The temperature on May 18, 1889 was about 14.8 °C. There was 20 mm of rain. The air pressure was 4 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 94%. Source: KNMI
January 22 » Columbia Phonograph is formed in Washington, D.C.
April 22 » At noon, thousands rush to claim land in the Land Rush of 1889. Within hours the cities of Oklahoma City and Guthrie are formed with populations of at least 10,000.
June 6 » The Great Seattle Fire destroys all of downtown Seattle.
June 26 » Bangui is founded by Albert Dolisie and Alfred Uzac in what was then the upper reaches of the French Congo.
November 8 » Montana is admitted as the 41st U.S. state.
November 15 » Brazil is declared a republic by Marshal Deodoro da Fonseca as Emperor Pedro II is deposed in a military coup.
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/I45614.php : accessed October 22, 2026), "Margaretha de Boer (1868-????)".
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