Search results
September is the ninth month of the year in both the Gregorian calendar and the less commonly used Julian calendar. In the modern Gregorian calendar, its length is 30 days. September in the Northern Hemisphere and March in the Southern Hemisphere are seasonally equivalent.
Learn about the origin, meaning, and significance of September, the ninth month of the year. Find out about its holidays, astronomical events, birthstone, birth flowers, and zodiac signs.
- The Month of September. September’s name comes from the Latin word septem, meaning “seven.” This month had originally been the seventh month of the early Roman calendar.
- September Calendar. September 4—the first Monday of the month—is Labor Day. Canadians also observe Labour Day. September 11 is Patriot Day, held in honor and remembrance of those who died in the September 11, 2001 terrorist attacks.
- Holiday Traditions Around the World. Also known as the Moon Festival, this holiday has been celebrated for at least 3,000 years and is said to be the second-largest festival in China after the Chinese New Year.
- September Astronomy. Full Harvest Moon. September’s full moon, the Harvest Moon, reaches peak illumination on Friday, September 19, at 5:58 A.M. EDT. Read more about September’s Full Moon!
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 . This article was most recently revised and updated by Adam Augustyn .
- The Editors of Encyclopaedia Britannica
Sep 1, 2012 · Learn about the origin, meaning, and significance of September, the ninth month of the year. Discover its birth flowers, birthstone, holidays, fun days, and historical events, including the 9/11 attacks.
September (Sep.) is the ninth month of the year in the Gregorian calendar, coming between August and October. It has 30 days. Its name comes from the Latin word sept for "seven" (it was the seventh month of the year, before January and February were added to the beginning of the year.)
