The temperature on August 19, 1911 was between 11.1 °C and 22.3 °C and averaged 17.0 °C. There was 8.6 hours of sunshine (59%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
January 12 » The University of the Philippines College of Law is formally established; three future Philippine presidents are among the first enrollees.
February 18 » The first official flight with airmail takes place from Allahabad, United Provinces, British India (now India), when Henri Pequet, a 23-year-old pilot, delivers 6,500 letters to Naini, about 10 kilometres (6.2mi) away.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
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.
October 10 » The day after a bomb explodes prematurely, the Wuchang Uprising begins against the Chinese monarchy.
November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.
When copying data from this family tree, please include a reference to the origin: Peeters Mathieu, "FutureHistory", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-riske/I30313.php : accessed October 25, 2026), "Arthur Jozef van Hese (1911-)".
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