page_title: 1931
section_title: September
hierarchical_section_title: 1931 / Events / September
caption_attribution_description: 中文: Jĭuyībā Lìshĭ Bówùguăn九・一八歴史博物館 English: September 18 History Museum in Shenyang
context_page_description: 1931 was a common year starting on Thursday of the Gregorian calendar, the 1931st year of the Common Era and Anno Domini designations, the 931st year of the 2nd millennium, the 31st year of the 20th century, and the 2nd year of the 1930s decade.
context_section_description: September 5 – John Thomson, Scottish football player, dies as the result of an accident, during a Celtic–Rangers match.
  September 7 – The Second Round Table Conference on the constitutional future of India opens in London; Mahatma Gandhi represents the Indian National Congress.
  September 10 – The worst hurricane in British Honduras history kills an estimated 1,500.
  September 15 – Invergordon Mutiny: Strikes are called in the British Royal Navy, due to decreased pay.
  September 18
  The Japanese military stage the Mukden Incident, as a pretext for the Japanese invasion of Manchuria.
  Geli Raubal commits suicide, in her uncle Adolf Hitler's apartment.
  September 20 – With a gun literally pointed to his head, the Chinese commander of Kirin province announces the annexation of that territory to Japan.
  September 22 – The United Kingdom abandons the gold standard.
caption: September 18: The Mukden Incident: Incident Museum in Shenyang
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