The temperature on January 15, 1911 was between -8.8 °C and -3.3 °C and averaged -6.0 °C. There was 2.9 hours of sunshine (35%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
January 5 » Kappa Alpha Psi, the world's third oldest and largest black fraternity, is founded at Indiana University.
January 21 » The first Monte Carlo Rally takes place.
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.
July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
October 24 » Orville Wright remains in the air nine minutes and 45 seconds in a glider at Kill Devil Hills, North Carolina.
Day of marriage December 3, 1938
The temperature on December 3, 1938 was between 4.1 °C and 7.1 °C and averaged 6.1 °C. There was 7.2 mm of rain during 7.3 hours. There was -0.1 hours of sunshine (0%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
June 7 » The Douglas DC-4E makes its first test flight.
June 24 » Pieces of a meteorite land near Chicora, Pennsylvania. The meteorite is estimated to have weighed 450metric tons when it hit the Earth's atmosphere and exploded.
July 17 » Douglas Corrigan takes off from Brooklyn to fly the "wrong way" to Ireland and becomes known as "Wrong Way" Corrigan.
July 28 » Hawaii Clipper disappears between Guam and Manila as the first loss of an airliner in trans-Pacific China Clipper service.
September 5 » Chile: A group of youths affiliated with the fascist National Socialist Movement of Chile are executed after surrendering during a failed coup.
September 30 » The League of Nations unanimously outlaws "intentional bombings of civilian populations".
When copying data from this family tree, please include a reference to the origin: Lucas A. Ocken, "Family tree Ocken", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ocken/I26232.php : accessed March 2, 2026), "Frans Jacobus Boelen (1911-)".
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