October is the tenth month of the year in the Gregorian Calendar and one of seven Gregorian months with a length of 31 days. In the northern hemisphere, October is commonly associated with the season of autumn.
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.
In Latin, octo means "eight," reflecting the fact that October was the eighth month in the Roman calendar.
In the old Japanese calendar, the 10th month was called Kannazuki (神無月,Kannazuki? also pronounced Kaminazuki), literally meaning the godless month, due to an old belief that in that month, the gods gathered in one spot to discuss the affairs of the world. Thus, in that month, the gods were inaccessible. (It actually means, "month of the gods", however, as the "na" is actually a possessive particle and the 無 character is ateji.)
In Korean, it is called "Sib-weol" meaning the tenth month
In Latin, October is called Octubre, or VIIIber (where VIII is the Roman number 8, in Latin "octo"). The name is due to the fact that it was the 8th month in the early Julian calendar beginning in March.