September is the ninth month of the year in the Julian and Gregorian calendars. Its length is 30 days. September, from the Très Riches Heures du Duc de Berry. September in the Northern Hemisphere and March in the Southern Hemisphere are seasonally equivalent. In the Northern hemisphere, the beginning of the meteorological autumn is on 1 September. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.