September

September is the ninth month of the year in the Julian and Gregorian calendars, the third of four months to have a length of 30 days, and the fourth of five months to have a length of less than 31 days. In the Northern Hemisphere September is the seasonal equivalent of March in the Southern Hemisphere.n the Northern hemisphere, the beginning of the meteorological autumn is on September 1st. In the Southern hemisphere, the beginning of the meteorological spring is on September 1st.