The temperature on January 26, 1885 was about -7.9 °C. The air pressure was 1 kgf/m2 and came mainly from the east-southeast. The airpressure was 77 cm mercury. The atmospheric humidity was 81%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
February 23 » Sino-French War: French Army gains an important victory in the Battle of Đồng Đăng in the Tonkin region of Vietnam.
March 19 » Louis Riel declares a provisional government in Saskatchewan, beginning the North-West Rebellion.
May 2 » Cree and Assiniboine warriors win the Battle of Cut Knife, their largest victory over Canadian forces during the North-West Rebellion.
June 3 » In the last military engagement fought on Canadian soil, the Cree leader, Big Bear, escapes the North-West Mounted Police.
September 12 » Arbroath 36–0 Bon Accord, a world record scoreline in professional Association football.
November 17 » Serbo-Bulgarian War: The decisive Battle of Slivnitsa begins.
Day of marriage January 13, 1910
The temperature on January 13, 1910 was between -1.1 °C and 6.1 °C and averaged 1.8 °C. There was 0.6 mm of rain. There was 3.2 hours of sunshine (39%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
March 3 » Rockefeller Foundation: John D. Rockefeller Jr. announces his retirement from managing his businesses so that he can devote all his time to philanthropy.
April 28 » Frenchman Louis Paulhan wins the 1910 London to Manchester air race, the first long-distance aeroplane race in England.
June 17 » Aurel Vlaicu pilots an A. Vlaicu nr. 1 on its first flight.
July 15 » In his book Clinical Psychiatry, Emil Kraepelin gives a name to Alzheimer's disease, naming it after his colleague Alois Alzheimer.
September 12 » Premiere performance of Gustav Mahler's Symphony No. 8 in Munich (with a chorus of 852 singers and an orchestra of 171 players. Mahler's rehearsal assistant conductor was Bruno Walter).
October 15 » Airship America is launched from New Jersey in the first attempt to cross the Atlantic by a powered aircraft.
Day of death July 30, 1922
The temperature on July 30, 1922 was between 15.3 °C and 21.3 °C and averaged 17.7 °C. There was 11.9 mm of rain. There was 0.1 hours of sunshine (1%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
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.
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
When copying data from this family tree, please include a reference to the origin: Sim Mostert, "Genealogy Pot en Smit", database, Genealogy Online (https://www.genealogieonline.nl/genealogie_pot_smit/I5386.php : accessed September 28, 2026), "JAN CORNELIS de GROOT (1885-1922)".
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