The temperature on February 15, 1870 was about -4.0 °C. The air pressure was 2 kgf/m2 and came mainly from the northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 85%. 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 23 » Reconstruction Era: Post-U.S. Civil War military control of Mississippi ends and it is readmitted to the Union.
March 1 » Marshal F. S. López dies during the Battle of Cerro Corá thus marking the end of the Paraguayan War.
April 13 » The New York City Metropolitan Museum of Art is founded.
July 18 » The First Vatican Council decrees the dogma of papal infallibility.
August 6 » Franco-Prussian War: The Battle of Spicheren is fought, resulting in a Prussian victory.
October 27 » Franco-Prussian War: Marshal Bazaine surrenders to Prussian forces at the conclusion of the Siege of Metz along with 140,000 French soldiers.
Day of death January 18, 1946
The average temperature on January 18, 1946 was -3.8 °C. There was 4.5 hours of sunshine (54%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
From June 24, 1945 till July 3, 1946 the Netherlands had a cabinet Schermerhorn - Drees with the prime ministers Prof. ir. W. Schermerhorn (VDB) and W. Drees (PvdA).
In The Netherlands , there was from July 3, 1946 to August 7, 1948 the cabinet Beel I, with Dr. L.J.M. Beel (KVP) as prime minister.
February 24 » Colonel Juan Perón, founder of the political movement that became known as Peronism, is elected to his first term as President of Argentina.
March 1 » The Bank of England is nationalised.
March 28 » Cold War: The United States Department of State releases the Acheson–Lilienthal Report, outlining a plan for the international control of nuclear power.
June 27 » In the Canadian Citizenship Act, the Parliament of Canada establishes the definition of Canadian citizenship.
July 25 » The Crossroads Baker device is the first underwater nuclear weapon test.
October 22 » Operation Osoaviakhim takes place, recruiting of thousands of military-related technical specialists from the Soviet occupation zone of post–World War II Germany for employment in the Soviet Union.
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I3205.php : accessed January 13, 2026), "Jan Ypma (1870-1946)".
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