The temperature on November 14, 1911 was between 4.0 °C and 11.0 °C and averaged 6.9 °C. There was 6.5 hours of sunshine (73%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 14 » Roald Amundsen's South Pole expedition makes landfall on the eastern edge of the Ross Ice Shelf.
May 21 » President of Mexico Porfirio Díaz and the revolutionary Francisco Madero sign the Treaty of Ciudad Juárez to put an end to the fighting between the forces of both men, concluding the initial phase of the Mexican Revolution.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
September 25 » An explosion of badly degraded propellant charges on board the French battleship Liberté detonates the forward ammunition magazines and destroys the ship.
September 29 » Italy declares war on the Ottoman Empire.
November 5 » After declaring war on the Ottoman Empire on September 29, 1911, Italy annexes Tripoli and Cyrenaica.
Day of marriage October 29, 1935
The temperature on October 29, 1935 was between 7.2 °C and 14.7 °C and averaged 10.7 °C. There was 4.7 mm of rain during 6.9 hours. There was -0.1 hours of sunshine (0%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
February 13 » A jury in Flemington, New Jersey finds Bruno Hauptmann guilty of the 1932 kidnapping and murder of the Lindbergh baby, the son of Charles Lindbergh.
February 26 » Robert Watson-Watt carries out a demonstration near Daventry which leads directly to the development of radar in the United Kingdom.
June 10 » Chaco War ends: A truce is called between Bolivia and Paraguay who had been fighting since 1932.
August 14 » Franklin D. Roosevelt signs the Social Security Act, creating a government pension system for the retired.
November 9 » The Congress of Industrial Organizations is founded in Atlantic City, New Jersey, by eight trade unions belonging to the American Federation of Labor.
December 18 » The Lanka Sama Samaja Party is founded in Ceylon.
When copying data from this family tree, please include a reference to the origin: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I4559.php : accessed February 28, 2026), "Helena Maria van de Bighelaar (1911-)".
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