October is the tenth month of the year in the Gregorian Calendar and one of seven Gregorian months with a length of 31 days. The eighth month in the old Roman calendar, October retained its name (from the Latin "octo" meaning "eight") when January and February were added.
October is commonly associated with the season of autumn in the Northern hemisphere and spring in the Southern hemisphere, where it is the seasonal equivalent to April in the Southern Hemisphere and vice versa. October begins in western tropical astrology with the sun in the sign of Libra and ends in the sign of Scorpio. Astronomically speaking, the sun actually begins in the constellation of Virgo and ends in the constellation of Libra.
October starts on the same day of the week as January in common years.
The month October has become famous as "red october", due to the RussianOctober revolution of 1917, although in the modern Gregorian calendar, the revolution started in November.