September is the ninth month of the year in the Julian and Gregorian calendars. Its length is 30 days.
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. In the Southern Hemisphere, the beginning of the meteorological spring is on 1 September.
September marks the beginning of the ecclesiastical year in the Eastern Orthodox Church. It is the start of the academic year in many countries of the northern hemisphere, in which children go back to school after the summer break, sometimes on the first day of the month. Some Libras
and Virgos are born in September, with Virgos being born on September 1st through September 22nd and Libras September 23rd through September 30.
September (from Latin septem, "seven") was originally the seventh month in the oldest known Roman calendar, the calendar of Romulus c. 750 BC, with March (Latin Martius) being the first month of the year until perhaps as late as 451 BC. After the calendar reform that added January and February to the beginning of the year, September became the ninth month but retained its name. It had 29 days until the Julian reform, which added a day.
Contents
Events
Ancient Roman observances for September include Ludi Romani, originally celebrated from September 12 to September 14, later extended to September 5 to September 19. In the 1st century BC, an extra day was added in honor of the deified Julius Caesar on 4 September. Epulum Jovis was held on September 13. Ludi Triumphales was held from September 18–22. The Septimontium was celebrated in September, and on December 11 on later calendars. These dates do not correspond to the modern Gregorian calendar.
September was called the "harvest month" in Charlemagne's calendar. September corresponds partly to the Fructidor and partly to the Vendémiaire of the first French republic. September is called Herbstmonat, harvest month, in Switzerland. The Anglo-Saxons called the month Gerstmonath, barley month, that crop being then usually harvested.
In 1752, the British Empire adopted the Gregorian calendar. In the British Empire that year, September 2 was immediately followed by September 14.
On Usenet, it is said that September 1993 (Eternal September) never ended.
In the United States, September is the third most common birth month, after August and July, which both have 31 days. Nine of the top 10 most common birthdays fall in September, with September 9 being the most common (and December 25 being the least common across the year), according to birth data collected by the National Center for Health Statistics between 1994 and 2014.
Astronomy and astrology
The September equinox takes place in this month, and certain observances are organized around it. It is the Autumn equinox in the Northern Hemisphere, and the Vernal equinox in the Southern Hemisphere. The dates can vary from 21 September to 24 September (in UTC).
September is mostly in the sixth month of the astrological calendar (and the first part of the seventh), which begins at the end of March/Mars/Aries.
Symbols
September's birthstone is the sapphire. The birth flowers are the forget-me-not, morning glory and aster. The zodiac signs are Virgo (until September 22) and Libra (September 23 onward).
Observances
This list does not necessarily imply either official status or general observance.
Non-Gregorian
List of observances set by the Bahá'í calendar
List of observances set by the Chinese calendar
List of observances set by the Hebrew calendar
List of observances set by the Islamic calendar
List of observances set by the Solar Hijri calendar
Month-long
Amerindian Heritage Month (Guyana)
Childhood Cancer Awareness Month (United Kingdom)
Gynecologic Cancer Awareness Month
Leukemia and Lymphoma Awareness Month
Ovarian Cancer Awareness Month
Thyroid Cancer Awareness Month
National Suicide Prevention Month
National Fruits & Veggies Month
Better Breakfast Month
Food Safety Education Month
National Childhood Obesity Awareness Month
Hydrocephalus Awareness Month
Pain Awareness Month
National Preparedness Month
National Prostate Health Month
National Sickle Cell Awareness Month
National Yoga Month
National Bourbon Heritage Month
California Wine Month
National Chicken Month
National Honey Month
National Mushroom Month
National Italian Cheese Month
Movable Gregorian
Engineering Day (Egypt)
White Balloon Day
Day of the Programmer
Te Wiki o te Reo Māori (Māori Language Week) (New Zealand)
See also Movable Western Christian observances
See also Movable Eastern Christian observances
Administrative Professionals' Day (South Africa)
Engineer's Days (Tanzania)
Engineer's Days (Tanzania)
Labor Day (Marshall Islands)
Teachers' Day (Singapore)
Brazilian Day (International observance)
Father's Day (Australia, Fiji, New Zealand, Papua New Guinea)
Memorial of the Holy Guardian Angels (Roman Catholic Church, October 2 in most locations, first Sunday in September by special dispensation)
