The temperature on July 22, 1870 was about 22.2 °C. The air pressure was 5 kgf/m2 and came mainly from the north-northwest. The airpressure was 77 cm mercury. The atmospheric humidity was 60%. 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).
April 13 » The New York City Metropolitan Museum of Art is founded.
July 1 » The United States Department of Justice formally comes into existence.
July 19 » Franco-Prussian War: France declares war on Prussia.
August 6 » Franco-Prussian War: The Battle of Wörth results in a decisive Prussian victory.
September 1 » Franco-Prussian War: The Battle of Sedan is fought, resulting in a decisive Prussian victory.
October 2 » A plebiscite held in Rome, supports annexation of city of Rome by the Kingdom of Italy.
Day of marriage November 16, 1895
The temperature on November 16, 1895 was about 14.0 °C. There was 0.6 mm of rain. The airpressure was 76 cm mercury. The atmospheric humidity was 93%. Source: KNMI
January 5 » Dreyfus affair: French army officer Alfred Dreyfus is stripped of his rank and sentenced to life imprisonment on Devil's Island.
February 24 » Revolution breaks out in Baire, a town near Santiago de Cuba, beginning the Cuban War of Independence, that ends with the Spanish–American War in 1898.
April 8 » In Pollock v. Farmers' Loan & Trust Co. the Supreme Court of the United States declares unapportioned income tax to be unconstitutional.
June 11 » Paris–Bordeaux–Paris, sometimes called the first automobile race in history or the "first motor race", takes place.
August 31 » German Count Ferdinand von Zeppelin patents his navigable balloon.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
Day of death August 18, 1918
The temperature on August 18, 1918 was between 14.6 °C and 19.9 °C and averaged 16.5 °C. There was 0.8 mm of rain. There was 2.0 hours of sunshine (14%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 16 » Finnish Civil War: Battle of Länkipohja is infamous for its bloody aftermath as the Whites executed 70–100 capitulated Reds.
May 14 » Cape Town Mayor, Sir Harry Hands, inaugurates the Two-minute silence.
June 1 » World War I: Western Front: Battle of Belleau Wood: Allied Forces under John J. Pershing and James Harbord engage Imperial German Forces under Wilhelm, German Crown Prince.
August 27 » Mexican Revolution: Battle of Ambos Nogales: U.S. Army forces skirmish against Mexican Carrancistas in the only battle of World War I fought on American soil.
November 1 » Malbone Street Wreck: The worst rapid transit accident in US history occurs under the intersection of Malbone Street and Flatbush Avenue, Brooklyn, New York City, with at least 102 deaths.
November 3 » Austria-Hungary enters into the Armistice of Villa Giusti with the Allies, and the Habsburg-ruled empire dissolves.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I109576.php : accessed October 20, 2026), "Pieter Wopkes Ritsma (1870-1918)".
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