September is the ninth month in the Gregorian calendar and has 30 days. It marks the start of the academic year in many countries—students return to school from their summer break—and the start of the church year in the Eastern Orthodox Church.
September, ninth month of the Gregorian calendar. Its name is derived from septem, Latin for “ seven,” an indication of its position in the early Roman calendar.
History of September According to the Roman calendar, it was in fact the seventh month until their calendar was modified by the addition of January and February (around 153 BC), after that it then became the ninth month.