The temperature on December 9, 1864 was about 2.8 °C. The air pressure was 0.5 kgf/m2 and came mainly from the south-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 98%. 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 29 » American Civil War: Kilpatrick–Dahlgren Raid fails: Plans to free 15,000 Union soldiers being held near Richmond, Virginia are thwarted.
April 10 » Archduke Maximilian of Habsburg is proclaimed emperor of Mexico during the French intervention in Mexico.
May 12 » American Civil War: The Battle of Spotsylvania Court House: Union troops assault a Confederate salient known as the "Mule Shoe", with the fiercest fighting of the war, much of it hand-to-hand combat, occurring at "the Bloody Angle" on the northwest.
May 22 » American Civil War: After ten weeks, the Union Army's Red River Campaign ends in failure.
August 18 » American Civil War: Battle of Globe Tavern: Union forces try to cut a vital Confederate supply-line into Petersburg, Virginia, by attacking the Wilmington and Weldon Railroad.
August 23 » American Civil War: The Union Navy captures Fort Morgan, Alabama, thus breaking Confederate dominance of all ports on the Gulf of Mexico except Galveston, Texas.
Day of death February 1, 1944
The temperature on February 1, 1944 was between 5.3 °C and 7.1 °C and averaged 5.8 °C. There was 0.4 mm of rain during 1.3 hours. There was 2.2 hours of sunshine (24%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. 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.
August 9 » Continuation War: The Vyborg–Petrozavodsk Offensive, the largest offensive launched by Soviet Union against Finland during the Second World War, ends to a strategic stalemate. Both Finnish and Soviet troops at the Finnish front dug to defensive positions, and the front remains stable until the end of the war.
August 16 » First flight of a jet with forward-swept wings, the Junkers Ju 287.
August 24 » World War II: Allied troops begin the attack on Paris.
September 11 » World War II: RAF bombing raid on Darmstadt and the following firestorm kill 11,500.
September 13 » World War II: Start of the Battle of Meligalas between the Greek Resistance forces of the Greek People's Liberation Army (ELAS) and the collaborationist security battalions.
November 7 » Soviet spy Richard Sorge, a half-Russian, half-German World War I veteran, is hanged by his Japanese captors along with 34 of his ring.
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/I95897.php : accessed December 27, 2025), "Koenraad de Groot (1864-1944)".
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