The temperature on April 13, 1881 was about 10.1 °C. There was 1 mm of rain. The air pressure was 1 kgf/m2 and came mainly from the east. The airpressure was 76 cm mercury. The atmospheric humidity was 92%. Source: KNMI
In The Netherlands , there was from August 20, 1879 to April 23, 1883 the cabinet Van Lijnden van Sandenburg, with Mr. C.Th. baron Van Lijnden van Sandenburg (conservatief-AR) as prime minister.
March 1 » The first Minnesota State Capitol burns down.
April 14 » The Four Dead in Five Seconds Gunfight is fought in El Paso, Texas.
June 28 » The Austro–Serbian Alliance of 1881 is secretly signed.
July 1 » General Order 70, the culmination of the Cardwell and Childers reforms of the British Army, comes into effect.
July 4 » In Alabama, the Tuskegee Institute opens.
July 23 » The Boundary Treaty of 1881 between Chile and Argentina is signed in Buenos Aires.
Day of marriage November 30, 1911
The temperature on November 30, 1911 was between 5.4 °C and 7.9 °C and averaged 6.5 °C. There was 0.2 mm of rain. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
May 31 » The RMS Titanic is launched in Belfast, Northern Ireland.
June 22 » Mexican Revolution: Government forces bring an end to the Magonista rebellion of 1911 in the Second Battle of Tijuana.
August 24 » Manuel de Arriaga is elected and sworn-in as the first President of Portugal.
October 24 » Orville Wright remains in the air nine minutes and 45 seconds in a glider at Kill Devil Hills, North Carolina.
November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.
December 14 » Roald Amundsen's team, comprising himself, Olav Bjaaland, Helmer Hanssen, Sverre Hassel, and Oscar Wisting, becomes the first to reach the South Pole.
Day of death November 26, 1953
The temperature on November 26, 1953 was between 1.0 °C and 6.2 °C and averaged 4.2 °C. The almost completely overcast was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
February 11 » The Soviet Union breaks off diplomatic relations with Israel.
April 13 » CIA director Allen Dulles launches the mind-control program Project MKUltra.
June 2 » The coronation of Queen Elizabeth II, who is crowned Queen of the United Kingdom, Canada, Australia, New Zealand and Her Other Realms and Territories & Head of the Commonwealth, the first major international event to be televised.
June 26 » Lavrentiy Beria, head of MVD, is arrested by Nikita Khrushchev and other members of the Politburo.
August 12 » The first testing of a real thermonuclear weapon (not test devices): The Soviet atomic bomb project continues with the detonation of "RDS-6s" (Joe 4), the first Soviet thermonuclear bomb.
September 21 » Lieutenant No Kum-sok, a North Korean pilot, defects to South Korea with his jet fighter.
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/I109853.php : accessed February 14, 2026), "Klaas de Groot (1881-1953)".
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