The temperature on April 13, 1909 was between 5.4 °C and 11.5 °C and averaged 8.3 °C. There was 1.7 mm of rain. There was 8.8 hours of sunshine (64%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
January 16 » Ernest Shackleton's expedition finds the magnetic South Pole.
February 2 » The Paris Film Congress opens. An attempt by European producers to form an equivalent to the MPCC cartel in the United States.
February 15 » The Flores Theater fire in Acapulco, Mexico kills 250.
March 4 » U.S. President William Taft used what became known as a Saxbe fix, a mechanism to avoid the restriction of the U.S. Constitution's Ineligibility Clause, to appoint Philander C. Knox as U.S. Secretary of State.
March 31 » Serbia formally withdraws its opposition to Austro-Hungarian actions in the Bosnian Crisis.
May 31 » The National Negro Committee, forerunner to the National Association for the Advancement of Colored People (NAACP), convenes for the first time.
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The Family tree Warmerdam-Janssen publication was prepared by Marjo Janssen (contact is not possible).
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