The temperature on September 25, 1909 was between 7.7 °C and 18.0 °C and averaged 12.4 °C. There was 1.0 hours of sunshine (8%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south. Source: KNMI
January 25 » Richard Strauss's opera Elektra receives its debut performance at the Dresden State Opera.
February 12 » The National Association for the Advancement of Colored People (NAACP) is founded.
February 20 » Publication of the Futurist Manifesto in the French journal Le Figaro.
August 28 » A group of mid-level Greek Army officers launches the Goudi coup, seeking wide-ranging reforms.
September 23 » The novel Le Fantôme de l'Opéra (The Phantom of the Opera), by Gaston Leroux, is published as a serialization in Le Gaulois.
November 18 » Two United States warships are sent to Nicaragua after 500 revolutionaries (including two Americans) are executed by order of José Santos Zelaya.
Day of death June 10, 1910
The temperature on June 10, 1910 was between 14.9 °C and 26.0 °C and averaged 20.2 °C. There was 0.8 mm of rain. There was 9.2 hours of sunshine (55%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
January 1 » Captain David Beatty is promoted to Rear admiral, and becomes the youngest admiral in the Royal Navy (except for Royal family members) since Horatio Nelson.
June 25 » Igor Stravinsky's ballet The Firebird is premiered in Paris, bringing him to prominence as a composer.
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 22 » The Duke of York's Picture House opens in Brighton, now the oldest continually operating cinema in Britain.
November 20 » Mexican Revolution: Francisco I. Madero issues the Plan de San Luis Potosí, denouncing Mexican President Porfirio Díaz, calling for a revolution to overthrow the government of Mexico, effectively starting the Mexican Revolution.
When copying data from this family tree, please include a reference to the origin: Jaap Geensen, "Geensen database", database, Genealogy Online (https://www.genealogieonline.nl/geensen-database/I257.php : accessed October 24, 2026), "Cornelia Geensen (1909-1910)".
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