World Sight Day – This day is observed annually on the second Thursday of October to raise awareness about the importance of good eye health and to advocate for universal access to eye care.
International Lesbian Day – This day is observed annually to celebrate and raise awareness about lesbian rights and culture.
International Octopus Day – This day is dedicated to the appreciation of one of the most intelligent and fascinating creatures in the sea, the octopus.
World Egg Day – This day is celebrated annually on the second Friday of October to raise awareness about the nutritional benefits of eggs and to promote their consumption worldwide.
National Depression Screening Day – This day is observed annually to raise awareness about the signs and symptoms of depression, to encourage individuals to get screened for depression, and to promote access to mental health resources.
Global Handwashing Day – This day is observed annually to promote the importance of handwashing as a key way to prevent the spread of diseases and infections.
314 – The Arch of Constantine, a triumphal arch in Rome, is dedicated.
1582 – Due to the implementation of the Gregorian calendar, this day does not exist in Italy, Spain, Portugal, and Poland.
1793 – The Battle of Wattignies ends in a French victory over the Austrians.
1871 – The Great Chicago Fire breaks out, destroying more than 17,000 buildings and killing hundreds of people.
1956 – New York Yankees pitcher Don Larsen throws the only perfect game in World Series history.
2001 – U.S. President George W. Bush announces the establishment of the Office of Homeland Security to coordinate efforts to prevent terrorist attacks.
