The temperature on April 28, 1911 was between 5.8 °C and 11.0 °C and averaged 9.1 °C. There was 6.0 mm of rain. There was 0.2 hours of sunshine (1%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the west. Source: KNMI
January 5 » Kappa Alpha Psi, the world's third oldest and largest black fraternity, is founded at Indiana University.
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.
August 29 » The Canadian Naval Service becomes the Royal Canadian Navy.
September 24 » His Majesty's Airship No. 1, Britain's first rigid airship, is wrecked by strong winds before her maiden flight at Barrow-in-Furness.
October 13 » Prince Arthur, Duke of Connaught and Strathearn, becomes the first Governor General of Canada of royal descent.
December 24 » Lackawanna Cut-Off railway line opens in New Jersey and Pennsylvania.
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/I118947.php : accessed October 18, 2026), "Ouwe Hielke Pol (1911-)".
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