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October is the tenth
monthA month is a unit of time, used with calendars, which was first used and invented in Mesopotamia, as a natural period related to the motion of the Moon; month and Moon are cognates. The traditional concept arose with the cycle of moon phases; such months are synodic months and last approximately...
of the
yearA year is the orbital period of the Earth moving around the Sun. For an observer on Earth, this corresponds to the period it takes the Sun to complete one course throughout the zodiac along the ecliptic....
in the
JulianThe Julian calendar began in 45 BC as a reform of the Roman calendar by Julius Caesar. It was chosen after consultation with the astronomer Sosigenes of Alexandria and was probably designed to approximate the tropical year .The Julian calendar has a regular year of 365 days divided into 12 months...
and
Gregorian CalendarThe Gregorian calendar, also known as the Western calendar, or Christian calendar, is the internationally accepted civil calendar. It was introduced by Pope Gregory XIII, after whom the calendar was named, by a decree signed on 24 February 1582, a papal bull known by its opening words Inter...
s and one of seven months with a length of 31
dayA day is a unit of time, commonly defined as an interval equal to 24 hours. It also can mean that portion of the full day during which a location is illuminated by the light of the sun...
s. The eighth month in the old
Roman calendarThe Roman calendar changed its form several times in the time between the founding of Rome and the fall of the Roman Empire. This article generally discusses the early Roman or pre-Julian calendars...
, October retained its name (from the Latin "
octo" meaning "eight") after January and February were inserted into the calendar that had originally been created by the Romans.
October is commonly associated with the season of
autumnAutumn is one of the four temperate seasons. Autumn marks the transition from summer into winter usually in September or March when the arrival of night becomes noticeably earlier....
in the
Northern hemisphereThe Northern Hemisphere is the half of a planet that is north of its equator—the word hemisphere literally means “half sphere”. It is also that half of the celestial sphere north of the celestial equator...
and
springSpring is one of the four temperate seasons, the transition period between winter and summer. Spring and "springtime" refer to the season, and broadly to ideas of rebirth, renewal and regrowth. The specific definition of the exact timing of "spring" varies according to local climate, cultures and...
in the
Southern hemisphereThe Southern Hemisphere is the part of Earth that lies south of the equator. The word hemisphere literally means 'half ball' or "half sphere"...
, where it is the seasonal equivalent to
AprilApril is the fourth month of the year in the Julian and Gregorian calendars, and one of four months with a length of 30 days. April was originally the second month of the Roman calendar, before January and February were added by King Numa Pompilius about 700 BC...
in the
Northern hemisphereThe Northern Hemisphere is the half of a planet that is north of its equator—the word hemisphere literally means “half sphere”. It is also that half of the celestial sphere north of the celestial equator...
and vice versa.
In common years January starts on the same day of the week as October, but no other month starts on the same day of the week as October in leap years. October ends on the same day of the week as February every year and January in common years only. In leap years, October starts on the same day as August of the previous year.
October events and holidays


- National Fire Prevention Week
National Fire Prevention Week is observed in the United States and Canada, during the week in which October 9th falls. In the United States, the first Presidential proclamation of Fire Prevention Week was made in 1925 by President Calvin Coolidge...
(United States and Canada) - October 3–9
- Children's Book Week
Children's literature is for readers and listeners up to about age twelve; it is often defined in four different ways: books written by children, books written for children, books chosen by children, or books chosen for children. It is often illustrated. The term is used in senses which sometimes...
(England) – First Week of October
- National Day
The National Day is a designated date on which celebrations mark the nationhood of a nation or non-sovereign country. This nationhood can be symbolized by the date of independence, of becoming republic or a significant date for a patron saint or a ruler . Often the day is not called "National Day"...
(China, People's Republic of) – el 1 de octubre
- Dashain in Nepal
- Independence Day in the Republic Of Cyprus
Cyprus , officially the Republic of Cyprus , is a Eurasian island country, member of the European Union, in the Eastern Mediterranean, east of Greece, south of Turkey, west of Syria and north of Egypt. It is the third largest island in the Mediterranean Sea.The earliest known human activity on the...
– el 1 de octubre
- Independence Day in Nigeria
Nigeria , officially the Federal Republic of Nigeria, is a federal constitutional republic comprising 36 states and its Federal Capital Territory, Abuja. The country is located in West Africa and shares land borders with the Republic of Benin in the west, Chad and Cameroon in the east, and Niger in...
– el 1 de octubre
- Gandhi Jayanthi in India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...
. Birthday of Mahathma Gandhi. - el 2 de octubre
- International Day of Non-Violence
The International Day of Non-Violence is observed on 2 October, the birthday of Mohandas Gandhi. This day is referred to in India as Gandhi Jayanti....
– el 2 de octubre
- German Unity Day
The Day of German Unity is the national day of Germany, celebrated on 3 October as a public holiday. It commemorates the anniversary of German reunification in 1990, when the goal of a unity of Germany that originated in the middle of the 19th century, was fulfilled. Therefore, the name addresses...
(Germany) – el 3 de octubre
- Proclamation of Portuguese Republic
A republic is a form of government in which the people, or some significant portion of them, have supreme control over the government and where offices of state are elected or chosen by elected people. In modern times, a common simplified definition of a republic is a government where the head of...
(PortugalPortugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...
) – el 5 de octubre
- International World Teachers' day
World Teachers' Day, held annually on October 5th since 1994, commemorates teachers’ organizations worldwide. Its aim is to mobilise support for teachers and to ensure that the needs of future generations will continue to be met by teachers....
– el 5 de octubre
- Armed Forces Day in Egypt commemorating the Yom Kippur War
The Yom Kippur War, Ramadan War or October War , also known as the 1973 Arab-Israeli War and the Fourth Arab-Israeli War, was fought from October 6 to 25, 1973, between Israel and a coalition of Arab states led by Egypt and Syria...
– el 6 de octubre
- Independence day in Croatia
Croatia , officially the Republic of Croatia , is a unitary democratic parliamentary republic in Europe at the crossroads of the Mitteleuropa, the Balkans, and the Mediterranean. Its capital and largest city is Zagreb. The country is divided into 20 counties and the city of Zagreb. Croatia covers ...
– el 8 de octubre
- Clergy Appreciation day - el 9 de octubre
- National Children Appreciation Day - el 9no de octubre
- Leif Erikson Day
Leif Erikson Day is an annual American observance occurring on October 9. It honors Leif Ericson , the Norse explorer who brought the first Europeans known to have set foot in North America....
- el 9 de octubre
- Columbus Day
Many countries in the New World and elsewhere celebrate the anniversary of Christopher Columbus's arrival in the Americas, which occurred on October 12, 1492, as an official holiday...
(United Sates) - el 10 de octubre
- National Day
The National Day is a designated date on which celebrations mark the nationhood of a nation or non-sovereign country. This nationhood can be symbolized by the date of independence, of becoming republic or a significant date for a patron saint or a ruler . Often the day is not called "National Day"...
(Taiwan,ROC) – el 10 de octubre
- National Coming Out Day
National Coming Out Day is an internationally observed civil awareness day celebrating individuals who publicly identify as bisexual, gay, lesbian, transgender—coming out regarding one's sexual orientation and/or gender identity being akin to a cultural rite of passage for LGBT people...
– el 11 de octubre
- Freethought Day
Freethought Day is October 12th, the annual observance by freethinkers and secularists of the anniversary of the effective end of the Salem Witch Trials....
– el 12 de octubre
- National Day
The National Day is a designated date on which celebrations mark the nationhood of a nation or non-sovereign country. This nationhood can be symbolized by the date of independence, of becoming republic or a significant date for a patron saint or a ruler . Often the day is not called "National Day"...
of SpainSpain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...
– el 12 de octubre (Discovery of America)
- Thanksgiving
Thanksgiving, or Thanksgiving Day , occurring on the second Monday in October , is an annual Canadian holiday to give thanks at the close of the harvest season....
(Canada) – Second Monday of October
- Health and Sports Day
, also known as Health-Sports Day or Sports Day, is a national holiday in Japan held annually on the second Monday in October. It commemorates the opening of the 1964 Summer Olympics being held in Tokyo, and exists to promote sports and an active lifestyle.-History and current practice:The first ...
(Japan) – Second Monday of October
- Columbus Day
Many countries in the New World and elsewhere celebrate the anniversary of Christopher Columbus's arrival in the Americas, which occurred on October 12, 1492, as an official holiday...
(Most of United States) – Second Monday of October
- Pregnancy and Infant Loss Remembrance Day
Pregnancy and Infant Loss Remembrance Day is a day of remembrance for pregnancy loss and infant death which includes but is not limited to miscarriage, stillbirth, SIDS, or the death of a newborn...
- el 15 de octubre
- World Food Day
World Food Day is celebrated every year around the world on 16 October in honor of the date of the founding of the Food and Agriculture Organization of the United Nations in 1945...
– el 16 de octubre
- Alaska
Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...
Day - el 18 de octubre
- Constitution Day
Constitution Day is a holiday to honor the constitution of a country. Constitution Day is often celebrated on the anniversary of the signing, promulgation or adoption of the constitution, or in some cases, to commemorate the change to constitutional monarchy:...
in NiueNiue , is an island country in the South Pacific Ocean. It is commonly known as the "Rock of Polynesia", and inhabitants of the island call it "the Rock" for short. Niue is northeast of New Zealand in a triangle between Tonga to the southwest, the Samoas to the northwest, and the Cook Islands to...
– el 19 de octubre
- Spirit Day - el 20 de octubre
- Apple Day
Apple Day is an annual celebration, held on October 21 each year, of apples and orchards. It is celebrated mainly in the United Kingdom.Apple Day was initiated by Common Ground in 1990 and has been celebrated in each subsequent year by people organizing hundreds of local events...
– el 21 de octubre
- Remembering the Hungarian Revolution of 1956 – el 23 de octubre
- United Nations Day
In 1947, the United Nations General Assembly declared 24 October, the anniversary of the Charter of the United Nations, as which "shall be devoted to making known to the peoples of the world the aims and achievements of the United Nations and to gaining their support for" its work.In 1971 the...
– el 24 de octubre
- Day of the Romanian Army – el 25 de octubre
- National Day of Austria
Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...
- el 26 de octubre
- Independence Day in St. Vincent & the Grenadines – el 27 de octubre
- Independence Day in Turkmenistan
Turkmenistan , formerly also known as Turkmenia is one of the Turkic states in Central Asia. Until 1991, it was a constituent republic of the Soviet Union, the Turkmen Soviet Socialist Republic . Turkmenistan is one of the six independent Turkic states...
– el 27 de octubre
- Navy Day
Several nations observe or have observed a Navy Day to recognize their navy. The term is also used in Britain to mean an open day at a dockyard such as HMNB Portsmouth, when the public can visit military ships and see air displays, roughly along the lines of an American Fleet Week .- Argentina...
(United States) – el 27 de octubre
- Ochi Day (No Day) in Greece
Greece , officially the Hellenic Republic , and historically Hellas or the Republic of Greece in English, is a country in southeastern Europe....
– el 28 de octubre
- Birth of Dundee Arbuis Mondares Prince of Cebu - el 30 de octubre
- Republic Day
Republic Day is the name of a holiday in several countries to commemorate the day when they became republics.-1 January in the Republic of Slovakia:This was the day of creation of the Republic of Slovakia. A national holiday since 1993...
in TurkeyTurkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...
– el 29 de octubre
- Reformation Day
Reformation Day is a religious holiday celebrated on October 31 in remembrance of the Reformation, particularly by Lutheran and some Reformed church communities...
in SloveniaSlovenia , officially the Republic of Slovenia , is a country in Central and Southeastern Europe touching the Alps and bordering the Mediterranean. Slovenia borders Italy to the west, Croatia to the south and east, Hungary to the northeast, and Austria to the north, and also has a small portion of...
- el 31 de octubre
- Halloween
Hallowe'en , also known as Halloween or All Hallows' Eve, is a yearly holiday observed around the world on October 31, the night before All Saints' Day...
, SamhainSamhain is a Gaelic harvest festival held on October 31–November 1. It was linked to festivals held around the same time in other Celtic cultures, and was popularised as the "Celtic New Year" from the late 19th century, following Sir John Rhys and Sir James Frazer...
– el 31 de octubre
Month-long observances
- National Pork Month (United States)
- Clergy Appreciation Month (United States)
- Pregnancy Loss and Infant Loss Awareness Month (United States)
- Filipino American History Month
Filipino American History Month, also known as the Filipino American Heritage Month, is celebrated in the United States during the month of October. The Filipino American National Historical Society established Filipino American History Month in the year 1988...
(in United States)
- Black History Month
Black History Month is an observance of the history of the African diaspora in a number of countries outside of Africa. Since 1976, it is observed annually in the United States and Canada in February, while in the United Kingdom it is observed in October...
(in United Kingdom)
- National Arts & Humanities Month
National Arts & Humanities Month was established in 1993 and is celebrated every October in the United States. It was initiated to encourage Americans to explore new facets of the arts and humanities in their lives, and to begin a lifelong habit of active participation in the arts and humanities...
(in United States)
- Domestic Violence
Domestic violence, also known as domestic abuse, spousal abuse, battering, family violence, and intimate partner violence , is broadly defined as a pattern of abusive behaviors by one or both partners in an intimate relationship such as marriage, dating, family, or cohabitation...
Awareness Month
- Breast Cancer Awareness Month
- Lesbian Gay Bisexual Transgender History Month (LGBT History Month
LGBT History Month is a month-long annual observance of lesbian, gay, bisexual and transgender history, and the history of the gay rights and related civil rights movements. It is observed during October in the United States, to include National Coming Out Day on October 11...
) (in United States)
- National Cyber Security Awareness Month
National Cyber Security Awareness Month is observed each October since its inception in 2004 in the United States of America. Sponsored by the National Cyber Security Division within the Department of Homeland Security and the National Cyber Security Alliance , Cyber Security Awareness Month...
(in United States)
- Fair Trade
Fair trade is an organized social movement and market-based approach that aims to help producers in developing countries make better trading conditions and promote sustainability. The movement advocates the payment of a higher price to producers as well as higher social and environmental standards...
Month
- Dwarfism
Dwarfism is short stature resulting from a medical condition. It is sometimes defined as an adult height of less than 4 feet 10 inches , although this definition is problematic because short stature in itself is not a disorder....
Awareness Month
- Auto Battery Safety Month
Cultural celebrations
- German American
German Americans are citizens of the United States of German ancestry and comprise about 51 million people, or 17% of the U.S. population, the country's largest self-reported ancestral group...
Heritage Month (September 15 to October 15 in the United States)
- National Hispanic Heritage Month
National Hispanic Heritage Month is the period from September 15 to October 15 in the United States, when people recognize the contributions of Hispanic and Latino Americans to the United States and celebrate the group's heritage and culture....
(September 15 to October 15 in the United States)
- Italian American
An Italian American , is an American of Italian ancestry. The designation may also refer to someone possessing Italian and American dual citizenship...
Heritage Month: Italian Heritage and Culture Month
- Polish American
A Polish American , is a citizen of the United States of Polish descent. There are an estimated 10 million Polish Americans, representing about 3.2% of the population of the United States...
Heritage Month
Health observances
- Celiac
Celiac may refer to:* Coeliac disease* Celiac artery* Celiac lymph nodes* Celiac plexus...
Sprue Awareness Month
- Health
Health is the level of functional or metabolic efficiency of a living being. In humans, it is the general condition of a person's mind, body and spirit, usually meaning to be free from illness, injury or pain...
Literacy Month http://www.healthliteracy.com/hl_month.asp*
- Healthy Lung
The lung is the essential respiration organ in many air-breathing animals, including most tetrapods, a few fish and a few snails. In mammals and the more complex life forms, the two lungs are located near the backbone on either side of the heart...
Month
- National Breast Cancer Awareness Month
Breast Cancer Awareness Month is an annual international health campaign organized by major breast cancer charities every October to increase awareness of the disease and to raise funds for research into its cause, prevention, diagnosis, treatment and cure...
(in United States and Canada)
- National Dental Hygiene
Teeth cleaning is part of oral hygiene and involves the removal of dental plaque from teeth with the intention of preventing cavities , gingivitis, and periodontal disease. People routinely clean their own teeth by brushing and interdental cleaning, and dental hygienists can remove hardened...
Month (in United States)
- National Down Syndrome
Down syndrome, or Down's syndrome, trisomy 21, is a chromosomal condition caused by the presence of all or part of an extra 21st chromosome. It is named after John Langdon Down, the British physician who described the syndrome in 1866. The condition was clinically described earlier in the 19th...
Awareness Month (in United States)
- National Infertility
Infertility primarily refers to the biological inability of a person to contribute to conception. Infertility may also refer to the state of a woman who is unable to carry a pregnancy to full term...
Awareness Month (in United States)
- National Domestic Violence
Domestic violence, also known as domestic abuse, spousal abuse, battering, family violence, and intimate partner violence , is broadly defined as a pattern of abusive behaviors by one or both partners in an intimate relationship such as marriage, dating, family, or cohabitation...
Awareness Month (in United States)
- National Lupus Erythematosus
Lupus erythematosus is a category for a collection of diseases with similar underlying problems with immunity . Symptoms of these diseases can affect many different body systems, including joints, skin, kidneys, blood cells, heart, and lungs...
Awareness Month (in United States)
- National Physical Therapy
Physical therapy , often abbreviated PT, is a health care profession. Physical therapy is concerned with identifying and maximizing quality of life and movement potential within the spheres of promotion, prevention, diagnosis, treatment/intervention,and rehabilitation...
Month (in United States)
- National Spina Bifida
Spina bifida is a developmental congenital disorder caused by the incomplete closing of the embryonic neural tube. Some vertebrae overlying the spinal cord are not fully formed and remain unfused and open. If the opening is large enough, this allows a portion of the spinal cord to protrude through...
Awareness Month (in United States)
- Rett Syndrome
Rett syndrome is a neurodevelopmental disorder of the grey matter of the brain that almost exclusively affects females. The clinical features include small hands and feet and a deceleration of the rate of head growth . Repetitive hand movements, such as wringing and/or repeatedly putting hands into...
Awareness Month (in United States)
- Sudden Infant Death Syndrome
Sudden infant death syndrome is marked by the sudden death of an infant that is unexpected by medical history, and remains unexplained after a thorough forensic autopsy and a detailed death scene investigation. An infant is at the highest risk for SIDS during sleep, which is why it is sometimes...
(SIDS) Awareness Month (in United States) http://www.sidscenter.org/
- World Blindness
Blindness is the condition of lacking visual perception due to physiological or neurological factors.Various scales have been developed to describe the extent of vision loss and define blindness...
Awareness Month
- American Pharmacist Month
- Medical Ultrasound Awareness Month
- 3D Ultrasound Awareness Month
Miscellaneous
- The month October has become famous as "Red October", due to the Russian October revolution
The October Revolution , also known as the Great October Socialist Revolution , Red October, the October Uprising or the Bolshevik Revolution, was a political revolution and a part of the Russian Revolution of 1917...
of 1917, although in the modern Gregorian calendar, the revolution started in November.
- The last week in October is the only time of the year when all four major North American Sports league schedule games - the NBA generally starts in that last week while the MLB postseason is just ending.
- In the 19th century, the month of October was dedicated to the devotion of the rosary
The rosary or "garland of roses" is a traditional Catholic devotion. The term denotes the prayer beads used to count the series of prayers that make up the rosary...
in Roman Catholic countries.
- Slavs call it "yellow month", from the fading of the leaf; to the Anglo-Saxon
Anglo-Saxon may refer to:* Anglo-Saxons, a group that invaded Britain** Old English, their language** Anglo-Saxon England, their history, one of various ships* White Anglo-Saxon Protestant, an ethnicity* Anglo-Saxon economy, modern macroeconomic term...
s it was known as Winterfylleth, because at this full moon (fylleth) winter was supposed to begin.
- Eric Whitacre composed a piece based on this month, titled October.
- Mental Illness Awareness Week
Mental Illness Awareness Week was established in 1990 by the U.S. Congress in recognition of efforts by the National Alliance on Mental Illness to educate and increase awareness about mental illness. It takes place every year during the first full week of October...
- Neil Gaiman
Neil Richard Gaiman born 10 November 1960)is an English author of short fiction, novels, comic books, graphic novels, audio theatre and films. His notable works include the comic book series The Sandman and novels Stardust, American Gods, Coraline, and The Graveyard Book...
wrote a story personifying the month in his collection Fragile ThingsFragile Things: Short Fictions and Wonders is a collection of short stories and poetry by English author, Neil Gaiman. It was published in the US and UK in 2006 by HarperCollins and Headline Review....
entitled October in the Chair.
- Ray Bradbury
Ray Douglas Bradbury is an American fantasy, horror, science fiction, and mystery writer. Best known for his dystopian novel Fahrenheit 451 and for the science fiction stories gathered together as The Martian Chronicles and The Illustrated Man , Bradbury is one of the most celebrated among 20th...
published a collection of short stories titled The October CountryThe October Country is a 1955 collection of nineteen macabre short stories by Ray Bradbury. It reprints fifteen of the twenty-seven stories of his 1947 collection Dark Carnival, and adds four more of his stories previously published elsewhere....
in 1955.
October symbols

- October's birthstone is the opal
Opal is an amorphous form of silica related to quartz, a mineraloid form, not a mineral. 3% to 21% of the total weight is water, but the content is usually between 6% to 10%. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most...
. It is said that the opal will crack if it is worn by someone who was not born in October.
- Its birth flower is the calendula
Calendula , pot marigold, is a genus of about 12–20 species of annual or perennial herbaceous plants in the daisy family Asteraceae, native to the area from Macaronesia east through the Mediterranean region to Iran...
.
- The Zodiac sign for those born in this month is either Libra
Libra is the seventh astrological sign in the Zodiac, originating from the constellation of Libra. In astrology, Libra is considered a "masculine", positive sign. It is also considered an air sign and is one of four cardinal signs...
or Scorpio|Infobox align="right" style="border:3px solid white;"||style="text-align: center;"|Scorpio is the eighth astrological sign in the Zodiac, which spans the zodiac between the 210th and 239th degree of celestial longitude. Generally, the Sun transits this area of the zodiac between 24 October and...
, depending on which day you were born.