September is the ninth month of the year in the Julian and Gregorian Calendars and one of four months with a length of 30 days. September in the Northern Hemisphere is the seasonal equivalent of March in the Southern Hemisphere. In the Northern hemisphere, the beginning of the meteorological autumn is on the 1st of September. In the Southern hemisphere, the beginning of the meteorological spring is on the 1st of September.
September symbols: The birthstone of September is the sapphire. The birth flowers for September are the forget-me-not, morning glory and aster. The zodiac signs for the month of September are Virgo (until September 21) and Libra (from September 22 onwards).
Historical Events for September, 1683
Day of Week 12th » Great Turkish War called Austro-Ottoman War: Battle of Vienna several European armies join forces to defeat the Ottoman Empire.
Day of Week 17th » Antonie van Leeuwenhoek writes a letter to the Royal Society describing "animalcules": the first known description of protozoa.