The temperature on May 11, 1911 was between 10.6 °C and 23.4 °C and averaged 17.0 °C. There was 11.2 hours of sunshine (72%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
January 12 » The University of the Philippines College of Law is formally established; three future Philippine presidents are among the first enrollees.
January 30 » The destroyer USSTerry makes the first airplane rescue at sea saving the life of Douglas McCurdy ten miles from Havana, Cuba.
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.
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 25 » An explosion of badly degraded propellant charges on board the French battleship Liberté detonates the forward ammunition magazines and destroys the ship.
Christening day June 25, 1911
The temperature on June 25, 1911 was between 10.9 °C and 19.8 °C and averaged 14.4 °C. There was 4.5 mm of rain. There was 9.5 hours of sunshine (57%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 12 » The University of the Philippines College of Law is formally established; three future Philippine presidents are among the first enrollees.
January 14 » Roald Amundsen's South Pole expedition makes landfall on the eastern edge of the Ross Ice Shelf.
April 2 » The Australian Bureau of Statistics conducts the country's first national census.
June 22 » George V and Mary of Teck are crowned King and Queen of the United Kingdom of Great Britain and Ireland.
October 10 » The day after a bomb explodes prematurely, the Wuchang Uprising begins 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.
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The Family tree Zwaan publication was prepared by Margreet Zwaan-Heg (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Margreet Zwaan-Heg, "Family tree Zwaan", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-zwaan/I1220264043.php : accessed May 22, 2024), "Pieter- Jan van Elst (1911-)".
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