September has 30 days. This is consistent every year, as September is one of the months in the Gregorian calendar that always has 30 days. The Gregorian calendar, which is the calendar system used in most of the world today, has 12 months with varying lengths. September is the ninth month of the year and is followed by October, which has 31 days. The number of days in each month is fixed, so September will always have 30 days, regardless of the year.
Menu