The temperature on June 1, 1911 was between 12.8 °C and 23.6 °C and averaged 18.4 °C. There was 14.0 hours of sunshine (85%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
April 27 » Following the resignation and death of William P. Frye, a compromise is reached to rotate the office of President pro tempore of the United States Senate.
May 9 » The works of Gabriele D'Annunzio are placed in the Index of Forbidden Books by the Vatican.
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 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
December 14 » Roald Amundsen's team, comprising himself, Olav Bjaaland, Helmer Hanssen, Sverre Hassel, and Oscar Wisting, becomes the first to reach the South Pole.
When copying data from this family tree, please include a reference to the origin: Hans Lington, "Database Langton / Lengton / Lington - Heil - Rahder", database, Genealogy Online (https://www.genealogieonline.nl/database-langton/I1284.php : accessed December 6, 2025), "Adriana Petronella van Mierlo (1911-)".
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