
September is the ninth month of the year in both the
Julian
Julian may refer to:
People
* Julian (emperor) (331–363), Roman emperor from 361 to 363
* Julian (Rome), referring to the Roman gens Julia, with imperial dynasty offshoots
* Saint Julian (disambiguation), several Christian saints
* Julian (give ...
and
Gregorian calendar
The Gregorian calendar is the calendar used in most parts of the world. It was introduced in October 1582 by Pope Gregory XIII as a modification of, and replacement for, the Julian calendar. The principal change was to space leap years dif ...
s, the third of four months to have a length of 30 days, and the fourth of five months to have a length of fewer than 31 days. September in the
Northern Hemisphere
The Northern Hemisphere is the half of Earth that is north of the Equator. For other planets in the Solar System, north is defined as being in the same celestial hemisphere relative to the invariable plane of the solar system as Earth's Nort ...
and
March in the
Southern Hemisphere are seasonally equivalent.
In the Northern hemisphere, the beginning of the meteorological
autumn
Autumn, also known as fall in American English and Canadian English, is one of the four temperate seasons on Earth. Outside the tropics, autumn marks the transition from summer to winter, in September ( Northern Hemisphere) or March ( Sou ...
is on 1 September. In the Southern hemisphere, the beginning of the meteorological
spring
Spring(s) may refer to:
Common uses
* Spring (season), a season of the year
* Spring (device), a mechanical device that stores energy
* Spring (hydrology), a natural source of water
* Spring (mathematics), a geometric surface in the shape of a ...
is on 1 September.
September marks the beginning of the
ecclesiastical year
The liturgical year, also called the church year, Christian year or kalendar, consists of the cycle of liturgical seasons in Christian churches that determines when feast days, including celebrations of saints, are to be observed, and which ...
in the
Eastern Orthodox Church
The Eastern Orthodox Church, also called the Orthodox Church, is the second-largest Christian church, with approximately 220 million baptized members. It operates as a communion of autocephalous churches, each governed by its bishops via ...
. It is the start of the
academic year
An academic year or school year is a period of time which schools, colleges and universities use to measure a quantity of study.
School holiday
School holidays (also referred to as vacations, breaks, and recess) are the periods during which sch ...
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.
September (from Latin ''septem'', "seven") was originally the seventh of ten months in the oldest known
Roman calendar
The Roman calendar was the calendar used by the Roman Kingdom and Roman Republic. The term often includes the Julian calendar established by the reforms of the Roman dictator, dictator Julius Caesar and Roman emperor, emperor Augustus in the ...
, the
calendar of Romulus , with March (Latin ''
Martius
Martius may refer to:
* Martius (month) the month of March on the ancient Roman calendar
* Campus Martius, the "Field of Mars" in ancient Rome
* Telo Martius, an ancient name for Toulon, France
People
* Carl Friedrich Philipp von Martius (1794–1 ...
'') the first month of the year until perhaps as late as 451 BC. After the calendar reform that added
January
January is the first month of the year in the Julian and Gregorian calendars and is also the first of seven months to have a length of 31 days. The first day of the month is known as New Year's Day. It is, on average, the coldest month of the ...
and
February
February is the second month of the year in the Julian and Gregorian calendars. The month has 28 days in common years or 29 in leap years, with the 29th day being called the ''leap day''. It is the first of five months not to have 31 days (th ...
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.
September events
Ancient Roman
In modern historiography, ancient Rome refers to Roman civilisation from the founding of the city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD. It encompasses the Roman Kingdom (753–509 BC ...
observances for September include
Ludi Romani
The ''Ludi Romani'' ("Roman Games"; see ''ludi'') was a religious festival in ancient Rome. Usually including multiple ceremonies called ''ludi''. They were held annually starting in 366 BC from September 12 to September 14, later extended to S ...
, 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
In ancient Roman religion, the Epulum Jovis (also Epulum Iovis) was a sumptuous ritual feast offered to Jove on the Ides of September (September 13) and a smaller feast on the Ides of November (November 13). It was celebrated during the ''Ludi Ro ...
was held on September 13.
Ludi Triumphales
In the Roman Empire of the 4th century, the ''Ludi Triumphales'' ("Triumphal Games") were games ''(ludi)'' held annually September 18–22 to commemorate the victory of Constantine over Licinius at Chalcedon in 324. No description of these games h ...
was held from September 18–22. The
Septimontium
The Septimontium was a proto-urban festival celebrated in ancient Rome by ''montani'', residents of the seven ''(sept-)'' communities associated with the hills or peaks of Rome ''(montes)'': Oppius, Palatium, Velia, Fagutal, Cermalus, Caelius, an ...
was celebrated in September, and on December 11 on later calendars. These dates do not correspond to the modern Gregorian calendar.
September was called "harvest month" in
Charlemagne
Charlemagne ( , ) or Charles the Great ( la, Carolus Magnus; german: Karl der Große; 2 April 747 – 28 January 814), a member of the Carolingian dynasty, was King of the Franks from 768, King of the Lombards from 774, and the first Holy ...
's calendar. September corresponds partly to the
Fructidor
Fructidor () is the twelfth month in the French Republican Calendar. The month was named after the Latin word ''fructus'', which means "fruit".
Fructidor is the third month of the summer quarter (''mois d'été''). By the Gregorian calendar, Fr ...
and partly to the
Vendémiaire
Vendémiaire () was the first month in the French Republican calendar. The month was named after the Occitan word ''vendemiaire'' (grape harvester).
Vendémiaire was the first month of the autumn quarter (''mois d'automne''). It started on the ...
of the
first French republic
In the history of France, the First Republic (french: Première République), sometimes referred to in historiography as Revolutionary France, and officially the French Republic (french: République française), was founded on 21 September 1792 ...
. September is called ''Herbstmonat'', harvest month, in Switzerland. The
Anglo-Saxon
The Anglo-Saxons were a Cultural identity, cultural group who inhabited England in the Early Middle Ages. They traced their origins to settlers who came to Britain from mainland Europe in the 5th century. However, the ethnogenesis of the Anglo- ...
s called the month ''Gerstmonath'', barley month, that crop being then usually harvested.
In 1752, the
British Empire
The British Empire was composed of the dominions, colonies, protectorates, mandates, and other territories ruled or administered by the United Kingdom and its predecessor states. It began with the overseas possessions and trading posts esta ...
adopted the
Gregorian calendar
The Gregorian calendar is the calendar used in most parts of the world. It was introduced in October 1582 by Pope Gregory XIII as a modification of, and replacement for, the Julian calendar. The principal change was to space leap years dif ...
. In the British Empire that year,
September 2
Events
Pre-1600
*44 BC – Pharaoh Cleopatra VII of Egypt declares her son co-ruler as Ptolemy XV Caesarion.
* 44 BC – Cicero launches the first of his ''Philippicae'' (oratorical attacks) on Mark Antony. He will make 14 of them ...
was immediately followed by
September 14.
On
Usenet
Usenet () is a worldwide distributed discussion system available on computers. It was developed from the general-purpose Unix-to-Unix Copy (UUCP) dial-up network architecture. Tom Truscott and Jim Ellis conceived the idea in 1979, and it was ...
, it is said that September 1993 (
Eternal September
Eternal September or the September that never ended is Usenet slang for a period beginning around 1993 when Internet service providers began offering Usenet access to many new users. The flood of new users overwhelmed the existing culture for onl ...
) never ended.
September in astronomy and astrology
The
September equinox
The September equinox (or southward equinox) is the moment when the Sun appears to cross the celestial equator, heading southward. Because of differences between the calendar year and the tropical year, the September equinox may occur anytime ...
takes place in this month, and certain observances are organized around it. It is the
Autumn equinox Autumnal equinox or variations, may refer to:
* September equinox, the autumnal equinox in the Northern Hemisphere
* March equinox, the autumnal equinox in the Southern Hemisphere
Other uses
* Autumnal Equinox Day (Japanese: 秋分の日, ''Shūbu ...
in the Northern Hemisphere, and the
Vernal equinox Spring equinox or vernal equinox or variations may refer to:
* March equinox, the spring equinox in the Northern Hemisphere
* September equinox, the spring equinox in the Southern Hemisphere
Other uses
* Nowruz, Persian/Iranian new year which be ...
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.
September symbols
* September's
birthstone
A birthstone is a gemstone
A gemstone (also called a fine gem, jewel, precious stone, or semiprecious stone) is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments. However, certain rock ...
is the
sapphire
Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide () with trace amounts of elements such as iron, titanium, chromium, vanadium, or magnesium. The name sapphire is derived via the Latin "sapphir ...
.

*


The birth flowers for September are the
forget-me-not,
morning glory and
aster
Aster or ASTER may refer to:
Biology
* ''Aster'' (genus), a genus of flowering plants
** List of ''Aster'' synonyms, other genera formerly included in ''Aster'' and still called asters in English
* Aster (cell biology), a cellular structure shap ...
.
* The
zodiac
The zodiac is a belt-shaped region of the sky that extends approximately 8° north or south (as measured in celestial latitude) of the ecliptic, the Sun path, apparent path of the Sun across the celestial sphere over the course of the year. ...
signs for the month of September are
Virgo (until September 22) and
Libra
Libra generally refers to:
* Libra (constellation), a constellation
* Libra (astrology), an astrological sign based on the star constellation
Libra may also refer to:
Arts and entertainment
* ''Libra'' (novel), a 1988 novel by Don DeLillo
Musi ...
(September 23 onwards).
[. Signs in UT/GMT for 1950–2030.]
Observances
''This list does not necessarily imply either official status or general observance.''
Non-Gregorian observances: 2020 dates
*
List of observances set by the Bahá'í calendar
A ''list'' is any set of items in a row. List or lists may also refer to:
People
* List (surname)
Organizations
* List College, an undergraduate division of the Jewish Theological Seminary of America
* SC Germania List, German rugby union ...
*
List of observances set by the Chinese calendar
The traditional Chinese holidays are an essential part of harvests or prayer offerings. The most important Chinese holiday is the Chinese New Year (Spring Festival), which is also celebrated in overseas ethnic Chinese communities (for example in ...
*
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
Dates in this table are determined by when the March Equinox falls. It will fall on March 20 from 2018-2023.
{, class="wikitable"
, - style="background:#efefef;"
! Holiday date !!Holiday name !! Description !!March equinox on March 19 !!March Eq ...
Month-long observances
*
Amerindian Heritage Month (Guyana) Welcome to Micobie! — Heritage Village 2012 guyanachronicle.com/2012/09/09/welcome-to-micobie-heritage-village-2012
Amerindian Heritage Month is an annual observance that is held every September in Guyana in honour of Guyana's indigenous peoples. ...
*
Childhood Cancer Awareness Month
Young Lives vs Cancer, the operating name for "CLIC Sargent", is a charity in the United Kingdom formed in 2005. Young Lives vs Cancer is the UK's leading cancer charity for children, young people and their families. Its care teams provide speci ...
(United Kingdom)
*Gynecologic Cancer Awareness Month
*Leukemia and Lymphoma Awareness Month
*Ovarian Cancer Awareness Month
*Thyroid Cancer Awareness Month
*National Suicide Prevention Month
United States observances
* Better Breakfast Month
* Food Safety Education Month
* National
Childhood Obesity
Childhood obesity is a condition where excess body fat negatively affects a child's health or well-being. As methods to determine body fat directly are difficult, the diagnosis of obesity is often based on BMI. Due to the rising prevalence of ...
Awareness Month
* Hydrocephalus Awareness Month
*
Pain Awareness Month
September is Pain Awareness Month in the United States. The American Chronic Pain Association (ACPA) declared this month to “raise public awareness of issues in the area of pain and pain management.”
History
In 2001, the ACPA led a coalit ...
*
National Preparedness Month
Since its inception in 2004, National Preparedness Month is observed each September in the United States of America. It is sponsored by the Federal Emergency Management Agency (FEMA) within the Department of Homeland Security and encourages America ...
*
National Prostate Health Month
National Prostate Health Month (NPHM), also known as National Prostate Cancer Awareness Month, is observed every September in North America by health experts, health advocates, and individuals concerned with men's prostate health and prostate canc ...
* National
Sickle Cell Awareness Month
*
National Yoga Month
Yoga as exercise is a physical activity consisting mainly of postures, often connected by flowing sequences, sometimes accompanied by breathing exercises, and frequently ending with relaxation lying down or meditation. Yoga in this form has ...
= Food Months
=
*
National Bourbon Heritage Month National Bourbon Heritage Month is an observance in the United States that calls for celebration of bourbon as America's "Native Spirit" during the month of September. On August 2, 2007, the US Senate declared September 2007 as "National Bourbon He ...
* California Wine Month
* National Chicken Month
*
National Honey Month
National Honey Month is a celebratory and promotional event held annually during the month of September in the United States.
Its purpose is to promote Beekeeping in the United States, American beekeeping, the beekeeping industry, and honey as a ...
*
National Mushroom Month
* National Italian Cheese Month
* National Papaya Month
* National Potato Month
* National Rice Month
* National Whole Grains Month
* National Wild Rice Month
Movable Gregorian observances
*
Engineering Day (Egypt)
*
White Balloon Day
White Balloon Day is a symbol of support for survivors of child sexual abuse. It first began after a public meeting in Belgium in October 1996, when 300,000 people gathered with white balloons to show public sympathy and support for the parents of ...
*
Day of the Programmer
Programmer's Day, also known as the Day of the Programmer, is a professional day that is celebrated in Russian Federation on the 256th (hexadecimal 100th, or the 28th) day of each year (September 13 during common years and on September 12 in leap ...
*
Te Wiki o te Reo Māori
( en, Māori Language Week) is a government-sponsored initiative intended to encourage New Zealanders to promote the use of the Māori language which is an official language of the country. Māori Language Week is part of a broader movement to ...
(Māori Language Week) (
New Zealand
New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...
)
*See also
Movable Western Christian observances
{{Use mdy dates, date=July 2017
This is a list of movable observances within Western Christianity. It includes secular observances which are calculated by religious observances.
''This list does not necessarily imply either official status nor gen ...
*See also
Movable Eastern Christian observances
First Wednesday
*
Administrative Professionals' Day (
South Africa
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countri ...
)
First Thursday
*
Engineer's Days (
Tanzania
Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country in East Africa within the African Great Lakes region. It borders Uganda to the north; Kenya to the northeast; Comoro Islands and ...
)
First Friday
*
Engineer's Days (
Tanzania
Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country in East Africa within the African Great Lakes region. It borders Uganda to the north; Kenya to the northeast; Comoro Islands and ...
)
*
Labor Day
Labor Day is a federal holiday in the United States celebrated on the first Monday in September to honor and recognize the American labor movement and the works and contributions of laborers to the development and achievements of the United St ...
(
Marshall Islands
The Marshall Islands ( mh, Ṃajeḷ), officially the Republic of the Marshall Islands ( mh, Aolepān Aorōkin Ṃajeḷ),'' () is an independent island country and microstate near the Equator in the Pacific Ocean, slightly west of the Internati ...
)
*
Teachers' Day (
Singapore
Singapore (), officially the Republic of Singapore, is a sovereign island country and city-state in maritime Southeast Asia. It lies about one degree of latitude () north of the equator, off the southern tip of the Malay Peninsula, borde ...
)
First Sunday
*
Brazilian Day
Brazilian Day is an annual festival which takes place in New York City (NYC) and other cities around the world. It is held near the beginning of September to celebrate Brazil's independence day celebrated today in the Federative Republic of Brazi ...
(
International observance)
*
Father's Day (
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
,
Fiji
Fiji ( , ,; fj, Viti, ; Fiji Hindi: फ़िजी, ''Fijī''), officially the Republic of Fiji, is an island country in Melanesia, part of Oceania in the South Pacific Ocean. It lies about north-northeast of New Zealand. Fiji consists ...
,
New Zealand
New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...
,
Papua New Guinea
Papua New Guinea (abbreviated PNG; , ; tpi, Papua Niugini; ho, Papua Niu Gini), officially the Independent State of Papua New Guinea ( tpi, Independen Stet bilong Papua Niugini; ho, Independen Stet bilong Papua Niu Gini), is a country i ...
)
*
Memorial of the Holy Guardian Angels
The Memorial of the Holy Guardian Angels is a memorial of the Catholic Church officially observed on 2 October. In some places, the feast is observed on the first Sunday in September with the permission of the Congregation for Divine Worship. Ca ...
(
Roman Catholic Church
The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptized Catholics worldwide . It is among the world's oldest and largest international institutions, and has played a ...
, October 2 in most locations, first Sunday in September by special dispensation)
First Sunday after September 4
*
Wakes Week (Parts of
England
England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...
and
Scotland
Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to the ...
)
**
Abbots Bromley Horn Dance
The Abbots Bromley Horn Dance is an English folk dance dating back to the Middle Ages. The dance takes place each year in Abbots Bromley, a village in Staffordshire, England. The modern version of the dance involves reindeer antlers, a hobby h ...
(
Abbots Bromley,
Staffordshire
Staffordshire (; postal abbreviation Staffs.) is a landlocked county in the West Midlands region of England. It borders Cheshire to the northwest, Derbyshire and Leicestershire to the east, Warwickshire to the southeast, the West Midlands Cou ...
,
England
England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...
)
Week of the First Monday
*
National Payroll Week
National Payroll Week (NPW) is a national awareness campaign held annually during the week of Labor Day, hosted by the American Payroll Association (APA) in the United States, the Chartered Institute of Payroll Professionals (CIPP) in the UK, an ...
(
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
,
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...
,
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...
)
Week of September 10
*
National Suicide Prevention Week
National Suicide Prevention Week (NSPW) is an annual week-long campaign in the United States to inform and engage health professionals and the general public about suicide prevention and warning signs of suicide. By drawing attention to the prob ...
(
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
)
First Monday
*
Labour Day
Labour Day ('' Labor Day'' in the United States) is an annual holiday to celebrate the achievements of workers. Labour Day has its origins in the labour union movement, specifically the eight-hour day movement, which advocated eight hours for ...
(
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...
,
Palau
Palau,, officially the Republic of Palau and historically ''Belau'', ''Palaos'' or ''Pelew'', is an island country and microstate in the western Pacific. The nation has approximately 340 islands and connects the western chain of the Caro ...
,
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
)
Nearest weekday to September 12
*