The temperature on February 25, 1864 was about 2.7 °C. The air pressure was 4 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.
June 3 » American Civil War: Battle of Cold Harbor: Union forces attack Confederate troops in Hanover County, Virginia.
August 10 » After Uruguay's governing Blanco Party refuses Brazil's demands, José Antônio Saraiva announces that the Brazilian military will begin reprisals, beginning the Uruguayan War.
August 22 » Twelve nations sign the First Geneva Convention, establishing the rules of protection of the victims of armed conflicts.
August 31 » During the American Civil War, Union forces led by General William T. Sherman launch an assault on Atlanta.
November 15 » American Civil War: Union General William Tecumseh Sherman begins Sherman's March to the Sea.
November 25 » American Civil War: A group of Confederate operatives calling themselves the Confederate Army of Manhattan starts fires in more than 20 locations in an unsuccessful attempt to burn down New York City.
Day of marriage June 14, 1900
The temperature on June 14, 1900 was about 19.8 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 54%. Source: KNMI
March 24 » Mayor of New York City Robert Anderson Van Wyck breaks ground for a new underground "Rapid Transit Railroad" that would link Manhattan and Brooklyn.
May 17 » The children's novel The Wonderful Wizard of Oz, by L. Frank Baum, is first published in the United States. The first copy is given to the author's sister.
May 29 » N'Djamena is founded as Fort-Lamy by the French commander Émile Gentil.
June 20 » Boxer Rebellion: The Imperial Chinese Army begins a 55-day siege of the Legation Quarter in Beijing, China.
July 19 » The first line of the Paris Métro opens for operation.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of death June 21, 1941
The temperature on June 21, 1941 was between 12.0 °C and 26.3 °C and averaged 20.0 °C. There was 15.1 hours of sunshine (90%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
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: J. Ham, "Family tree Ham", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ham/I28409.php : accessed February 24, 2026), "Johannes van der Waals (1864-1941)".
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