The temperature on February 20, 1864 was about -2.6 °C. The air pressure was 3 kgf/m2 and came mainly from the north-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 75%. Source: KNMI
In The Netherlands , there was from February 1, 1862 to February 10, 1866 the cabinet Thorbecke II, with Mr. J.R. Thorbecke (liberaal) as prime minister.
February 27 » American Civil War: The first Northern prisoners arrive at the Confederate prison at Andersonville, Georgia.
April 10 » Archduke Maximilian of Habsburg is proclaimed emperor of Mexico during the French intervention in Mexico.
April 29 » Theta Xi fraternity is founded at Rensselaer Polytechnic Institute, the only fraternity to be founded during the American Civil War.
May 20 » American Civil War: Battle of Ware Bottom Church: In the Virginia Bermuda Hundred campaign, 10,000 troops fight in this Confederate victory.
September 29 » American Civil War: The Battle of Chaffin's Farm is fought.
December 8 » Pope Pius IX promulgates the encyclical Quanta cura and its appendix, the Syllabus of Errors, outlining the authority of the Catholic Church and condemning various liberal ideas.
When copying data from this family tree, please include a reference to the origin: Wim Ackermans, "Family tree Ackermans", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ackermans/I5580.php : accessed January 29, 2026), "Petrus Joannes Hagen (1864-????)".
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