CS Knowledge Base

1909 (MCMIX) was a common year starting on Friday in the Gregorian calendar and a common year starting on Thursday in the Julian calendar.

• March 31 – Construction of the RMS Titanic is started
• April 6 – Robert Peary arrived in the north pole.
• April – The Adana massacre takes place in the Ottoman city of Adana
• June 29 – Alfred Deakin becomes Prime Minister of Australia
• The first model of the Model T is sold
• The pH scale is developed.
• Emil Theodor Kocher, Swiss doctor, won the 1909 Nobel Prize in Physiology or Medicine

• January 13 – Danny Barker, American musician (d. 1994)
• February 9 – Carmen Miranda, Brazilian singer and actress (d. 1955)
• March 20 – Juliana of the Netherlands (d. 2004)
• May 27
  • Dolores Hope, American singer (d. 2011)
  • Juan Vicente Pérez, Supercentenarian Venezuelan man fourth-oldest verified man ever (d. 2024)
• June 6 – Isaiah Berlin, Latvian philosopher and educator (d. 1997)
• June 10 – Errol Flynn, American actor (d. 1959)
• August 10 – Leo Fender, American guitar maker (d. 1991)
• August 21 – Ethel Caterham, British supercentenarian
• August 26 – Sylvère Maes, Belgian cyclist (d. 1966)
• September 21 – Kwame Nkrumah, President of Ghana (d. 1972)

• February 17 – Geronimo, Native American leader (b. 1829)
• December 17 – Léopold II of Belgium, King of Belgium (b. 1835)
• January 12 – Hermann Minkowski, German mathematician (b. 1864)