The temperature on March 9, 1909 was between -3.4 °C and 3.8 °C and averaged 0.4 °C. There was 2.7 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
January 9 » Ernest Shackleton, leading the Nimrod Expedition to the South Pole, plants the British flag 97 nautical miles (180km; 112mi) from the South Pole, the farthest anyone had ever reached at that time.
February 26 » Kinemacolor, the first successful color motion picture process, is first shown to the general public at the Palace Theatre in London.
May 31 » The National Negro Committee, forerunner to the National Association for the Advancement of Colored People (NAACP), convenes for the first time.
August 24 » Workers start pouring concrete for the Panama Canal.
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.
December 10 » Selma Lagerlöf becomes the first female writer to win the Nobel Prize in Literature.
Day of marriage August 12, 1937
The temperature on August 12, 1937 was between 12.5 °C and 24.5 °C and averaged 18.6 °C. There was 7.7 hours of sunshine (52%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I6622.php : accessed January 22, 2026), "Gerrit Nat (1909-)".
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