The temperature on September 21, 1870 was about 18.5 °C. The air pressure was 4 kgf/m2 and came mainly from the northwest. The airpressure was 77 cm mercury. The atmospheric humidity was 75%. 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).
January 10 » John D. Rockefeller incorporates Standard Oil.
February 3 » The Fifteenth Amendment to the United States Constitution is ratified, guaranteeing voting rights to male citizens regardless of race.
July 19 » Franco-Prussian War: France declares war on Prussia.
August 16 » Franco-Prussian War: The Battle of Mars-la-Tour is fought, resulting in a Prussian victory.
August 24 » The Wolseley expedition reaches Manitoba to end the Red River Rebellion.
September 18 » Old Faithful Geyser is observed and named by Henry D. Washburn.
Day of death February 13, 1950
The temperature on February 13, 1950 was between 2.7 °C and 9.2 °C and averaged 6.0 °C. There was 28.1 mm of rain during 10.8 hours. There was 1.4 hours of sunshine (14%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the southwest. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
When copying data from this family tree, please include a reference to the origin: Gert Pieters, "Family tree Koops", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-koops/I1398.php : accessed January 19, 2026), "Roelof Thalen (1870-1950)".
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