The temperature on June 8, 1910 was between 15.4 °C and 27.0 °C and averaged 19.4 °C. There was 3.5 mm of rain. There was 8.5 hours of sunshine (51%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-northeast. Source: KNMI
March 8 » French aviator Raymonde de Laroche becomes the first woman to receive a pilot's license.
May 11 » An act of the U.S. Congress establishes Glacier National Park in Montana.
July 16 » John Robertson Duigan makes the first flight of the Duigan pusher biplane, the first aircraft built in Australia.
August 29 » The Japan–Korea Treaty of 1910, also known as the Japan–Korea Annexation Treaty, becomes effective, officially starting the period of Japanese rule in Korea.
September 26 » Indian journalist Swadeshabhimani Ramakrishna Pillai is arrested after publishing criticism of the government of Travancore and is exiled.
October 15 » Airship America is launched from New Jersey in the first attempt to cross the Atlantic by a powered aircraft.
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/I9863.php : accessed January 27, 2026), "Martinus de Heer (1910-)".
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