The temperature on June 16, 1865 was about 15.4 °C. The air pressure was 2 kgf/m2 and came mainly from the north-northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 50%. 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.
March 4 » The third and final national flag of the Confederate States of America is adopted by the Confederate Congress.
April 4 » American Civil War: A day after Union forces capture Richmond, Virginia, U.S. President Abraham Lincoln visits the Confederate capital.
June 11 » The Naval Battle of the Riachuelo is fought on the rivulet Riachuelo (Argentina), between the Paraguayan Navy on one side and the Brazilian Navy on the other. The Brazilian victory was crucial for the later success of the Triple Alliance (Brazil, Uruguay, and Argentina) in the Paraguayan War.
July 14 » First ascent of the Matterhorn by Edward Whymper and party, four of whom die on the descent.
July 31 » The first narrow-gauge mainline railway in the world opens at Grandchester, Queensland, Australia.
November 26 » Battle of Papudo: A Spanish navy schooner is defeated by a Chilean corvette north of Valparaíso, Chile.
Day of death May 2, 1873
The temperature on May 2, 1873 was about 16.6 °C. The air pressure was 6 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 56%. Source: KNMI
From July 6, 1872 till August 27, 1874 the Netherlands had a cabinet De Vries - Fransen van de Putte with the prime ministers Mr. G. de Vries Azn. (liberaal) and I.D. Fransen van de Putte (liberaal).
When copying data from this family tree, please include a reference to the origin: Weijerman, "Family tree Weijerman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weijerman/I687.php : accessed February 17, 2026), "Johan Willem Petraeus (1865-1873)".
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