The temperature on April 15, 1909 was between 1.2 °C and 12.9 °C and averaged 7.2 °C. There was 11.3 hours of sunshine (82%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
March 10 » By signing the Anglo-Siamese Treaty of 1909, Thailand relinquishes its sovereignty over the Malay states of Kedah, Kelantan, Perlis and Terengganu, which become British protectorates.
April 11 » The city of Tel Aviv is founded.
April 13 » The military of the Ottoman Empire reverses the Ottoman countercoup of 1909 to force the overthrow of Sultan Abdul Hamid II.
August 28 » A group of mid-level Greek Army officers launches the Goudi coup, seeking wide-ranging reforms.
August 30 » Burgess Shale fossils are discovered by Charles Doolittle Walcott.
September 20 » The South Africa Act 1909 creates the Union of South Africa from the British Colonies from four smaller colonies.
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