The temperature on July 13, 1909 was between 9.2 °C and 19.1 °C and averaged 14.5 °C. There was 1.5 hours of sunshine (9%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. 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.
April 9 » The U.S. Congress passes the Payne–Aldrich Tariff Act.
May 31 » The National Negro Committee, forerunner to the National Association for the Advancement of Colored People (NAACP), convenes for the first time.
July 16 » Persian Constitutional Revolution: Mohammad Ali Shah Qajar is forced out as Shah of Persia and is replaced by his son Ahmad Shah Qajar.
September 20 » The South Africa Act 1909 creates the Union of South Africa from the British Colonies from four smaller colonies.
October 16 » William Howard Taft and Porfirio Díaz hold the first summit between a U.S. and a Mexican president. They narrowly escape assassination.
Day of marriage August 15, 1935
The temperature on August 15, 1935 was between 11.4 °C and 21.5 °C and averaged 15.9 °C. There was 6.7 hours of sunshine (45%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
February 12 » USSMacon, one of the two largest helium-filled airships ever created, crashes into the Pacific Ocean off the coast of California and sinks.
July 5 » The National Labor Relations Act, which governs labor relations in the United States, is signed into law by President Franklin D. Roosevelt.
July 20 » Switzerland: A Royal Dutch Airlines plane en route from Milan to Frankfurt crashes into a Swiss mountain, killing thirteen.
October 10 » In Greece, a coup d'état ends the Second Hellenic Republic.
November 24 » The Senegalese Socialist Party holds its second congress.
December 18 » The Lanka Sama Samaja Party is founded in Ceylon.
When copying data from this family tree, please include a reference to the origin: Nienke Oudbier, "Descendants van de Vlag1", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-oudbier/I2202.php : accessed February 5, 2026), "Christiaan Kool (1909-)".
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