The temperature on February 12, 1870 was about -4.7 °C. There was 0.1 mm of rain. The air pressure was 22 kgf/m2 and came mainly from the east-northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 90%. 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.
February 23 » Reconstruction Era: Post-U.S. Civil War military control of Mississippi ends and it is readmitted to the Union.
February 28 » The Bulgarian Exarchate is established by decree of Sultan Abdülaziz of the Ottoman Empire.
July 19 » Franco-Prussian War: France declares war on Prussia.
August 6 » Franco-Prussian War: The Battle of Spicheren is fought, resulting in a Prussian victory.
November 1 » In the United States, the Weather Bureau (later renamed the National Weather Service) makes its first official meteorological forecast.
Day of death July 18, 1942
The temperature on July 18, 1942 was between 12.0 °C and 19.4 °C and averaged 14.9 °C. There was 6.1 mm of rain during 2.5 hours. There was 2.6 hours of sunshine (16%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
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: R.A.Hemerik, "Descendants Hemerik-Broekhuizen-Huner-Koper-Barink", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-hemerik/I89697.php : accessed January 8, 2026), "Leendert Marinus Valkenburgh (1870-1942)".
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