March 13 » British forces occupy Bloemfontein, Orange Free State, during the Second Boer War.
May 23 » American Civil War: Sergeant William Harvey Carney is awarded the Medal of Honor for his heroism in the Assault on the Battery Wagner in 1863.
June 14 » The second German Naval Law calls for the Imperial German Navy to be doubled in size, resulting in an Anglo-German naval arms race.
October 19 » Max Planck discovers Planck's law of black-body radiation.
October 25 » The United Kingdom annexes the Transvaal.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of marriage May 29, 1941
The temperature on May 29, 1941 was between 9.8 °C and 13.8 °C and averaged 11.6 °C. There was 10.2 mm of rain during 7.6 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
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.
June 3 » World War II: The Wehrmacht razes the Greek village of Kandanos to the ground and murders 180 of its inhabitants.
July 16 » Joe DiMaggio hits safely for the 56th consecutive game, a streak that still stands as an MLB record.
September 1 » The Nazis execute 2,500 Jews by shooting in Ostroh, Ukraine.
December 9 » World War II: The American 19th Bombardment Group attacks Japanese ships off the coast of Vigan, Luzon.
December 14 » World War II: Japan signs a treaty of alliance with Thailand.
December 26 » U.S. President Franklin D. Roosevelt signs a bill establishing the fourth Thursday in November as Thanksgiving Day in the United States.
Day of death June 26, 1966
The temperature on June 26, 1966 was between 13.2 °C and 19.5 °C and averaged 15.9 °C. There was 5.8 mm of rain during 3.8 hours. There was 6.0 hours of sunshine (36%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
February 3 » The Soviet Union's Luna 9 becomes the first spacecraft to make a soft landing on the Moon, and the first spacecraft to take pictures from the surface of the Moon.
March 16 » Launch of Gemini 8, the 12th manned American space flight and first space docking with an Agena Target Vehicle.
August 26 » The South African Border War starts with the battle at Omugulugwombashe.
August 29 » Leading Egyptian thinker Sayyid Qutb is executed for plotting the assassination of President Gamal Abdel Nasser.
November 15 » Project Gemini: Gemini 12 completes the program's final mission, when it splashes down safely in the Atlantic Ocean.
December 26 » The first Kwanzaa is celebrated by Maulana Karenga, the chair of Black Studies at California State University, Long Beach.
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/I209307.php : accessed February 12, 2026), "Geertje Koekkoek (1900-1966)".
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