January 16 » The United States Senate accepts the Anglo-German treaty of 1899 in which the United Kingdom renounces its claims to the Samoan islands.
March 13 » British forces occupy Bloemfontein, Orange Free State, during the Second Boer War.
May 17 » The children's novel The Wonderful Wizard of Oz, by L. Frank Baum, is first published in the United States. The first copy is given to the author's sister.
June 17 » Boxer Rebellion: Western Allied and Japanese forces capture the Taku Forts in Tianjin, China.
July 27 » Kaiser Wilhelm II makes a speech comparing Germans to Huns; for years afterwards, "Hun" would be a disparaging name for Germans.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of death January 14, 1981
The temperature on January 14, 1981 was between -0.5 °C and 7.5 °C and averaged 3.3 °C. There was 20.1 mm of rain during 14.1 hours. The almost completely overcast was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
In The Netherlands , there was from Friday, September 11, 1981 to Saturday, May 29, 1982 the cabinet Van Agt II, with Mr. A.A.M. van Agt (CDA) as prime minister.
January 15 » Pope John Paul II receives a delegation from Solidarity (Polish trade union) at the Vatican led by Lech Wałęsa.
March 1 » Provisional Irish Republican Army member Bobby Sands begins his hunger strike in HM Prison Maze.
August 24 » Mark David Chapman is sentenced to 20 years to life in prison for murdering John Lennon.
October 9 » President François Mitterrand abolishes capital punishment in France.
December 11 » El Mozote massacre: Armed forces in El Salvador kill an estimated 900 civilians in an anti-guerrilla campaign during the Salvadoran Civil War.
December 18 » First flight of the Russian heavy strategic bomber Tu-160, the world's largest combat aircraft, largest supersonic aircraft and largest variable-sweep wing aircraft built.
When copying data from this family tree, please include a reference to the origin: Dirk Ham, "Family tree Ham en Dallinga", database, Genealogy Online (https://www.genealogieonline.nl/ham-stamboom/I6491.php : accessed January 10, 2026), "Ymte Johannes Bootsma (1900-1981)".
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