The temperature on December 25, 1910 was between 3.9 °C and 7.7 °C and averaged 5.5 °C. There was 3.7 mm of rain. There was 0.6 hours of sunshine (8%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
January 15 » Construction ends on the Buffalo Bill Dam in Wyoming, United States, which was the highest dam in the world at the time, at 325ft (99m).
July 16 » John Robertson Duigan makes the first flight of the Duigan pusher biplane, the first aircraft built in Australia.
September 26 » Indian journalist Swadeshabhimani Ramakrishna Pillai is arrested after publishing criticism of the government of Travancore and is exiled.
October 15 » Airship America is launched from New Jersey in the first attempt to cross the Atlantic by a powered aircraft.
October 22 » Hawley Harvey Crippen (the first felon to be arrested with the help of radio) is convicted of poisoning his wife.
November 20 » Mexican Revolution: Francisco I. Madero issues the Plan de San Luis Potosí, denouncing Mexican President Porfirio Díaz, calling for a revolution to overthrow the government of Mexico, effectively starting the Mexican Revolution.
Day of marriage May 27, 1936
The temperature on May 27, 1936 was between 9.2 °C and 19.1 °C and averaged 13.4 °C. There was 3.0 hours of sunshine (19%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
January 15 » The first building to be completely covered in glass, built for the Owens-Illinois Glass Company, is completed in Toledo, Ohio.
June 15 » First flight of the Vickers Wellington bomber.
July 26 » Spanish Civil War: Germany and Italy decide to intervene in the war in support for Francisco Franco and the Nationalist faction.
September 6 » Spanish Civil War: The Interprovincial Council of Asturias and León is established.
October 1 » Spanish Civil War: The Central Committee of Antifascist Militias of Catalonia dissolves itself, handing control of Catalan defence militias over to the Generalitat.
December 23 » Spanish Civil War: The Spanish Republic legalizes the Regional Defence Council of Aragon.
Day of death November 24, 1969
The temperature on November 24, 1969 was between -0.1 °C and 7.0 °C and averaged 3.9 °C. There was 0.4 mm of rain during 0.7 hours. There was 3.5 hours of sunshine (42%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
January 19 » Student Jan Palach dies after setting himself on fire three days earlier in Prague's Wenceslas Square to protest about the invasion of Czechoslovakia by the Soviet Union in 1968. His funeral turns into another major protest.
March 13 » Apollo 9 returns safely to Earth after testing the Lunar Module.
May 9 » Carlos Lamarca leads the first urban guerrilla action against the military dictatorship of Brazil in São Paulo, by robbing two banks.
May 13 » May 13 Incident involving sectarian violence in Kuala Lumpur, Malaysia.
August 10 » A day after murdering Sharon Tate and four others, members of Charles Manson's cult kill Leno and Rosemary LaBianca.
September 14 » The US Selective Service selects September 14 as the First Draft Lottery date.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I68166.php : accessed February 2, 2026), "Roelof Pots (1910-1969)".
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