October

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January is the first and first month of the year in the Julian and Gregorian calendars and 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 year within most of the Northern Hemisphere and the warmest month of the year within most of the Southern Hemisphere. In the Southern hemisphere, January is the seasonal equivalent of July in the Northern hemisphere and vice versa.

February is the second and shortest month of the year in the Julian and Gregorian calendar with 28 days in common years and 29 days in leap years, with the quadrennial 29th day being called the leap day. It is the first of five months to have a length of fewer than 31 days, and the only month to have a length of fewer than 30 days, with the other seven months having 31 days. In 2019, February had 28 days.

March is the third month of the year and named after Mars in both the Julian and Gregorian calendars. It is the second of seven months to have a length of 31 days. In the Northern Hemisphere, the meteorological beginning of spring occurs on the first day of March. The March equinox on the 20 or 21 marks the astronomical beginning of spring in the Northern Hemisphere and the beginning of autumn in the Southern Hemisphere, where September is the seasonal equivalent of the Northern Hemisphere's March. Birthday Number the letter "M".

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Maple leaf in October. Maplefall2red.jpg
Maple leaf in October.

October is the tenth month of the year in the Julian and Gregorian Calendars and the sixth of seven months to have a length of 31 days. The eighth month in the old Roman calendar, October retained its name (from the Latin ôctō meaning "eight") after January and February were inserted into the calendar that had originally been created by the Romans. In Ancient Rome, one of three Mundus patet would take place on October 5, Meditrinalia October 11, Augustalia on October 12, October Horse on October 15, and Armilustrium on October 19. These dates do not correspond to the modern Gregorian calendar. Among the Anglo-Saxons, it was known as Ƿinterfylleþ, because at this full moon (fylleþ) winter was supposed to begin. [1]

The Julian calendar, proposed by Julius Caesar in 708 AUC (46 BC/BCE), was a reform of the Roman calendar. It took effect on 1 January 709 AUC (45 BC/BCE), by edict. It was the predominant calendar in the Roman world, most of Europe, and in European settlements in the Americas and elsewhere, until it was gradually replaced by the Gregorian calendar, promulgated in 1582 by Pope Gregory XIII.

The Gregorian calendar is the calendar used in most of the world. It is named after Pope Gregory XIII, who introduced it in October 1582. The calendar spaces leap years to make the average year 365.2425 days long, approximating the 365.2422-day tropical year that is determined by the Earth's revolution around the Sun. The rule for leap years is:

Every year that is exactly divisible by four is a leap year, except for years that are exactly divisible by 100, but these centurial years are leap years if they are exactly divisible by 400. For example, the years 1700, 1800, and 1900 are not leap years, but the year 2000 is.

Day unit of time lasting 24 hours

A day is approximately the period of time during which the Earth completes one rotation around its axis. A solar day is the length of time which elapses between the Sun reaching its highest point in the sky two consecutive times.

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October is commonly associated with the season of autumn in the Northern hemisphere and with spring in the Southern hemisphere.

Autumn one of the Earths four temperate seasons, occurring between summer and winter

Autumn, also known as fall in American English and sometimes in Canadian English, is one of the four temperate seasons. Autumn marks the transition from summer to winter, in September or March, when the duration of daylight becomes noticeably shorter and the temperature cools considerably. One of its main features in temperate climates is the shedding of leaves from deciduous trees.

Spring (season) one of the Earths four temperate seasons, occurring between winter and summer

Spring is one of the four temperate seasons, following winter and preceding summer. There are various technical definitions of spring, but local usage of the term varies according to local climate, cultures and customs. When it is spring in the Northern Hemisphere, it is autumn in the Southern Hemisphere and vice versa. At the spring equinox, days and nights are approximately twelve hours long, with day length increasing and night length decreasing as the season progresses.

October symbols

The calendula Calendula January 2008-1 filtered.jpg
The calendula
Opal A hydrated amorphous form of silica

Opal is a hydrated amorphous form of silica (SiO2·nH2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classed as minerals. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl, and basalt. Opal is the national gemstone of Australia.

Tourmaline Cyclosilicate mineral group

Tourmaline is a crystalline boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline is classified as a semi-precious stone and the gemstone comes in a wide variety of colors.

Birthstone Gemstones representing a persons birth month

A birthstone is a gemstone that represents a person's month of birth. Birthstones are often worn as jewelry or as a pendant.

October observances

This list does not necessarily imply either official status or general observance.

Non-Gregorian observances: 2019 dates

Month-long observances

Catholic Church Largest Christian church, led by the Bishop of Rome

The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with approximately 1.3 billion baptised Catholics worldwide as of 2017. As the world's oldest continuously functioning international institution, it has played a prominent role in the history and development of Western civilisation. The church is headed by the Bishop of Rome, known as the pope. Its central administration, the Holy See, is in the Vatican City, an enclave within the city of Rome in Italy.

World Vegetarian Day is observed annually around the planet on October 1. It is a day of celebration established by the North American Vegetarian Society in 1977 and endorsed by the International Vegetarian Union in 1978, "To promote the joy, compassion and life-enhancing possibilities of vegetarianism." It brings awareness to the ethical, environmental, health, and humanitarian benefits of a vegetarian lifestyle.

United States

The last two to three weeks in October (and, occasionally, the first week of November) are the only time of the year during which each of the "Big Four" major North American professional sports leagues schedule games; the National Basketball Association begins its preseason and about two weeks later starts the regular season, the National Hockey League is about one month into its regular season, the National Football League is about halfway through its regular season, and Major League Baseball is in its postseason with the League Championship Series and World Series. There have been 19 occasions in which all four leagues have played games on the same day (an occurrence popularly termed a "sports equinox"), with the most recent of these taking place on October 28, 2018. [16] Additionally, the Canadian Football League is typically nearing the end of its regular season during this period, while Major League Soccer is beginning the MLS Cup Playoffs.

United States, Culinary

Movable observances, 2019 dates

First Tuesday: October 1

First Wednesday: October 2

First Thursday: October 3

First Friday: October 4

First Full Week: October 6–12

Week of October 9: October 6–12

Week of October 10: October 6–12

First Sunday: October 6

First Monday: October 7

Second Tuesday: October 8

Second Wednesday: October 9

Second Thursday: October 10

Second Friday: October 11

Second Saturday: October 12

Second Sunday: October 13

Second Monday: October 14

Wednesday of second full week in October: October 16

Third Thursday: October 17

Third Saturday: October 19

Week of Fourth Wednesday: October 20–26

Third Sunday: October 20

Third Monday: October 21

Fourth Wednesday: October 22

Last Friday: October 25

Fourth Saturday: October 26

Last Sunday: October 27

Fourth Monday: October 28

Last Monday: October 28

Fixed observances

October, from the Tres Riches Heures du Duc de Berry Les Tres Riches Heures du duc de Berry octobre.jpg
October, from the Très Riches Heures du Duc de Berry
A shop in Derry decorated for Halloween Halloween Derry 2005.jpg
A shop in Derry decorated for Halloween
Halloween pumpkins Pumpkins-2009.jpg
Halloween pumpkins

Miscellaneous

  1. Chisholm, Hugh, ed. (1911). "October"  . Encyclopædia Britannica (11th ed.). Cambridge University Press.
  2. "Gemstone Leaflet" (PDF). Jewelers of America. Archived from the original (PDF) on 2012-02-22. Retrieved Jan 22, 2012.
  3. SHG Resources. "Birth Months, Flowers, and Gemstones". SHG Resources. Retrieved 2011-11-01.
  4. "CATHOLIC ENCYCLOPEDIA: Special Devotions For Months". Newadvent.org. Retrieved 2012-10-24.
  5. "Health Literacy Month – Finding the Right Words for Better Health". www.healthliteracymonth.org.
  6. "SDMS Medical Ultrasound Awareness Month". www.sdms.org.
  7. "Home - Rettsyndrome.org". www.rettsyndrome.org.
  8. Archived February 8, 2007, at the Wayback Machine
  9. Hultin G. Why Celebrate Vegetarian Awareness Month? Food & Nutrition, October 7, 2014, Accessed November 14, 2018
  10. Vegetarian Awareness Month: Celebrating Meatless Mindfulness, Oldways website, September 28, 2017, Accessed November 14, 2018
  11. World Vegetarian Day, October 1. North American Vegetarian Society (the North American WVD sponsor explains that “World Vegetarian Day [on] October 1st is the annual kick-off of Vegetarian Awareness Month”, accessed November 14, 2018
  12. Palmer S. World Vegetarian Awareness Month. Vegan Outreach website, October 2, 2017, Accessed November 14, 2018
  13. October is National Vegetarian Awareness Month. Fix.com. October 1, 2014, Accessed November 14, 2018
  14. Celebrate Vegetarian Awareness Month. Fruits & Veggies: More Matters. Monday, October 14, 2013, at 4:00 am. Accessed November 14, 2018
  15. Gerber J. 9 Easy Wasys to Celebrate Vegetarian Awareness Month. Care2. October 1, 2012. Accessed November 14, 2018
  16. Bushnell, Henry (October 27, 2018). "Dodgers' World Series win ensures Game 5 ... and a historic 'Sports Equinox'". Yahoo Sports. Retrieved October 27, 2018.
  17. "American Archives Month". National Archives. 2017-06-22. Retrieved 2018-09-25.
  18. "October is Adopt a Shelter Dog Month". ASPCA. Retrieved 2014-10-17.
  19. http://www.staysafeonline.info/content/about-ncsam Archived October 5, 2009, at the Wayback Machine
  20. "American Pharmacists Month 2011". Pharmacist.com. Retrieved 2011-11-01.
  21. "Little People of America".
  22. "Eczema Awareness Month – National Eczema Association". National Eczema Association.
  23. "ADHA – October is National Dental Hygiene Month". Adha.org. Retrieved 2011-11-01.
  24. "Healthy Lung Month – Lung problems". 5 October 2012.
  25. "Observing Infertility Awareness Month". Library.adoption.com. Retrieved 2011-11-01.
  26. "Liver Awareness Month". www.liverfoundation.org.
  27. Archived November 21, 2007, at the Wayback Machine
  28. APTA | National Physical Therapy Month Archived January 5, 2009, at the Wayback Machine
  29. "Spina Bifida Association – Spina Bifida Association". Sbaa.org. Retrieved 2011-11-01.
  30. "October is SIDS Awareness Month". www.nichd.nih.gov.
  31. "National Pizza Month". Pizza.com. Retrieved 2012-10-24.
  32. "Popcorn Poppin' Month". Popcorn.org. Retrieved 2012-10-24.
  33. "October is National Pork Month". ThePigSite. 2007-10-02.
  34. "NOAA Fisheries Celebrates National Seafood Month". NOAA.gov. 2017-10-01. Retrieved 2017-10-09.
  35. "About Walk to School Day : Walk & Bike to School". Walkbiketoschool.org. Retrieved 21 October 2017.
  36. http://www.collegeradio.org/
  37. https://worldcpday.org/
  38. https://www.aba.com/engagement/pages/getsmartaboutcredit.aspx
  39. "Diversity – UMUC". www.umuc.edu.

Related Research Articles

April is the fourth month of the year in the Gregorian calendar, the fifth in the early Julian, the first of four months to have a length of 30 days, and the second of five months to have a length of less than 31 days.

August eighth month in the Julian and Gregorian calendars

August is the eighth month of the year in the Julian and Gregorian calendars, and the fifth of seven months to have a length of 31 days. It was originally named Sextilis in Latin because it was the sixth month in the original ten-month Roman calendar under Romulus in 753 BC, and March was the first month of the year. About 700 BC, it became the eighth month when January and February were added to the year before March by King Numa Pompilius, who also gave it 29 days. Julius Caesar added two days when he created the Julian calendar in 46 BC, giving it its modern length of 31 days. In 8 BC, it was renamed in honor of Augustus. According to a Senatus consultum quoted by Macrobius, he chose this month because it was the time of several of his great triumphs, including the conquest of Egypt.

December twelfth month in the Julian and Gregorian calendars

December is the twelfth and final month of the year in the Julian and Gregorian Calendars and is the seventh and last of seven months to have a length of 31 days.

June is the sixth month of the year in the Julian and Gregorian calendars, the second of four months to have a length of 30 days, and the third of five months to have a length of less than 31 days. June contains the summer solstice in the Northern Hemisphere, the day with the most daylight hours, and the winter solstice in the Southern Hemisphere, the day with the fewest daylight hours. June in the Northern Hemisphere is the seasonal equivalent to December in the Southern Hemisphere and vice versa. In the Northern Hemisphere, the beginning of the traditional astronomical summer is 21 June. In the Southern Hemisphere, meteorological winter begins on 1 June.

July is the seventh month of the year in the Julian and Gregorian Calendars and the fourth of seven months to have a length of 31 days. It was named by the Roman Senate in honour of Roman general Julius Caesar, it being the month of his birth. Prior to that, it was called Quintilis, being the fifth month of the 10-month calendar.

May fifth month in the Julian and Gregorian calendars

May is the fifth month of the year in the Julian and Gregorian Calendars and the third of seven months to have a length of 31 days.

November is the eleventh and penultimate month of the year in the Julian and Gregorian Calendars, the fourth and last of four months to have a length of 30 days and the fifth and last of five months to have a length of less than 31 days. November was the ninth month of the ancient Roman calendar. November retained its name when January and February were added to the Roman calendar. November is a month of late spring in the Southern Hemisphere and late autumn in the Northern Hemisphere. Therefore, November in the Southern Hemisphere is the seasonal equivalent of May in the Northern Hemisphere and vice versa. In Ancient Rome, Ludi Plebeii was held from November 4–17, Epulum Jovis was held on November 13 and Brumalia celebrations began on November 24. These dates do not correspond to the modern Gregorian calendar.

September ninth month in the Julian and Gregorian calendars

September is the ninth month of the year in the Julian and Gregorian calendars, the third of four months to have a length of 30 days, and the fourth of five months to have a length of less than 31 days. In the Northern Hemisphere September is the seasonal equivalent of March in the Southern Hemisphere.

Veterans Day federal holiday in the United States

Veterans Day is a federal holiday in the United States observed annually on November 11, for honoring military veterans, that is, persons who have served in the United States Armed Forces. It coincides with other holidays including Armistice Day and Remembrance Day which are celebrated in other countries that mark the anniversary of the end of World War I. Major hostilities of World War I were formally ended at the 11th hour of the 11th day of the 11th month of 1918, when the Armistice with Germany went into effect. At the urging of major U.S. veteran organizations, Armistice Day was renamed Veterans Day in 1954.

Childrens Day one of many public observances in honor of children (for the Universal Childrens Day, 20th November, use Q3187040)

International Children's Day is a day recognized to celebrate children. The day is celebrated on various dates in different countries.

Republic Day holiday in several countries to commemorate the day when they became republics

A Republic Day is a holiday to commemorate the day when a country became republic. In some countries, it is known as National Day or Proclamation Day, or by some other sort of name.

Armed Forces Day National holidays honoring military forces

Many nations around the world observe some kind of Armed Forces Day to honor their military forces. It is celebrated in the United States as a day to appreciate all active duty service members. This day is not to be confused with Veterans Day or Memorial Day.

The United States has many observances.

Lists of holidays by various categorization.