The temperature on January 1, 1909 was between -6.4 °C and 0.4 °C and averaged -1.5 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
January 28 » United States troops leave Cuba with the exception of Guantanamo Bay Naval Base after being there since the Spanish–American War.
February 20 » Publication of the Futurist Manifesto in the French journal Le Figaro.
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 20 » The South Africa Act 1909 creates the Union of South Africa from the British Colonies from four smaller colonies.
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.
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The Family tree Van Willigen publication was prepared by Rob van Willigen (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Rob van Willigen, "Family tree Van Willigen", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-willigen/I1435.php : accessed March 17, 2026), "Jan Sjoerd Bonga (1909-)".
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