The temperature on April 29, 1870 was about 4.2 °C. The air pressure was 1 kgf/m2 and came mainly from the west-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 83%. 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).
February 15 » Stevens Institute of Technology is founded in New Jersey, USA and offers the first Bachelor of Engineering degree in Mechanical Engineering.
March 1 » Marshal F. S. López dies during the Battle of Cerro Corá thus marking the end of the Paraguayan War.
March 16 » The first version of the overture fantasy Romeo and Juliet by Tchaikovsky receives its première performance.
September 18 » Old Faithful Geyser is observed and named by Henry D. Washburn.
September 19 » Franco-Prussian War: The siege of Paris begins. The city will hold out for over four months before surrendering.
November 1 » In the United States, the Weather Bureau (later renamed the National Weather Service) makes its first official meteorological forecast.
Day of marriage April 28, 1906
The temperature on April 28, 1906 was between 0.4 °C and 7.7 °C and averaged 5.1 °C. There was 6.7 mm of rain. There was -0.1 hours of sunshine (0%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from August 17, 1905 to February 11, 1908 the cabinet De Meester, with Mr. Th. de Meester (unie-liberaal) as prime minister.
April 7 » Mount Vesuvius erupts and devastates Naples.
April 7 » The Algeciras Conference gives France and Spain control over Morocco.
September 13 » The Santos-Dumont 14-bis makes a short hop, the first flight of a fixed-wing aircraft in Europe.
September 30 » The Royal Galician Academy, the Galician language's biggest linguistic authority, starts working in La Coruña, Spain.
December 4 » Alpha Phi Alpha the first black intercollegiate Greek lettered fraternity was founded at Cornell University in Ithaca, New York.
December 15 » The London Underground's Great Northern, Piccadilly and Brompton Railway opens.
Day of death June 21, 1941
The temperature on June 21, 1941 was between 12.0 °C and 26.3 °C and averaged 20.0 °C. There was 15.1 hours of sunshine (90%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
When copying data from this family tree, please include a reference to the origin: Paul Potten, "Family tree Potten", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-potten/I60.php : accessed January 7, 2026), "Anna Maria Janssen (1870-1941)".
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