The temperature on June 20, 1870 was about 19.4 °C. The air pressure was 6 kgf/m2 and came mainly from the west. The airpressure was 77 cm mercury. The atmospheric humidity was 67%. 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).
January 26 » Reconstruction Era: Virginia rejoins the Union.
July 19 » Franco-Prussian War: France declares war on Prussia.
August 2 » Tower Subway, the world's first underground tube railway, opens in London, England, United Kingdom.
August 16 » Franco-Prussian War: The Battle of Mars-la-Tour is fought, resulting in a Prussian victory.
September 6 » Louisa Ann Swain of Laramie, Wyoming becomes the first woman in the United States to cast a vote legally after 1807.
November 1 » In the United States, the Weather Bureau (later renamed the National Weather Service) makes its first official meteorological forecast.
Day of marriage May 16, 1895
The temperature on May 16, 1895 was about 8.3 °C. There was 2 mm of rain. The airpressure was 75 cm mercury. The atmospheric humidity was 75%. Source: KNMI
January 13 » First Italo-Ethiopian War: the war's opening battle, the Battle of Coatit, occurs; it is an Italian victory.
February 9 » William G. Morgan creates a game called Mintonette, which soon comes to be referred to as volleyball.
March 19 » Auguste and Louis Lumière record their first footage using their newly patented cinematograph.
October 21 » The Republic of Formosa collapses as Japanese forces invade.
November 5 » George B. Selden is granted the first U.S. patent for an automobile.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
Day of death June 21, 1944
The temperature on June 21, 1944 was between 10.6 °C and 16.6 °C and averaged 12.9 °C. There was 2.5 hours of sunshine (15%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
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: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I54043.php : accessed October 2, 2026), "Dirk van der Ploeg (1870-1944)".
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