1940 Summer Olympics
The 1940 Summer Olympics, officially known as the Games of the XII Olympiad, were originally scheduled to be held from September 21 to October 6, 1940, in Tokyo City, Empire of Japan. They were rescheduled for Helsinki, Finland, to be held from July 20 to August 4, 1940, due to the 1937 Japanese invasion of China, but were cancelled due to the outbreak of World War II. Helsinki and Tokyo eventually hosted the 1952 and 1964 Summer Olympics respectively.