The temperature on August 31, 1909 was between 8.4 °C and 15.8 °C and averaged 11.7 °C. There was 11.8 mm of rain. There was 5.9 hours of sunshine (43%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
January 16 » Ernest Shackleton's expedition finds the magnetic South Pole.
April 6 » Robert Peary and Matthew Henson become the first people to reach the North Pole; Peary's claim has been disputed because of failings in his navigational ability.
September 20 » The South Africa Act 1909 creates the Union of South Africa from the British Colonies from four smaller colonies.
September 30 » The Cunard Line's RMS Mauretania makes a record-breaking westbound crossing of the Atlantic, that will not be bettered for 20 years.
October 26 » An Jung-geun assassinates Japan's Resident-General of Korea.
December 4 » The Montreal Canadiens ice hockey club, the oldest surviving professional hockey franchise in the world, is founded as a charter member of the National Hockey Association.
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/I138926.php : accessed December 29, 2025), "Willem Lambertus de Vries (1909-)".
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