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{{Calendar}}
{{Calendar}}
[[File:Maple leaf in fall.jpg|thumb|Red maple (''[[Acer rubrum]]'') leaf in October (Northern hemisphere).]]
[[File:Maple leaf in fall.jpg|thumb|Red maple (''[[Acer rubrum]]'') leaf in October (Northern hemisphere).]]
[[File:10 October - Percent of global area at temperature records - Global warming - NOAA.svg |thumb |In recent decades, the number of warm temperature records in October has outpaced cold temperature records over a growing portion of Earth's surface.<ref>{{cite web |title=Mean Monthly Temperature Records Across the Globe |url=https://www.ncei.noaa.gov/access/monitoring/monthly-report/global/202501/supplemental/page-3 |publisher=National Centers for Environmental Information (NCEI) of the National Oceanic and Atmospheric Administration (NOAA) }} Link is an example for one month; for other months, change the "202501" in the preceding URL to '''yyyymm''', where '''yyyy''' is the four-digit year and '''mm''' is the two-digit month (01=January through 12=December)</ref>]]


'''October''' is the tenth month of the year in the [[Julian calendar|Julian]] and [[Gregorian calendar]]s. Its length is 31 days. The eighth month in the old [[Roman calendar#Legendary 10 month calendar|calendar of Romulus]] {{circa|750 BC}}, October retained its name (from [[Latin language|Latin]] and [[Greek language|Greek]] ''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 [[Lapis manalis|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-Saxon]]s, it was known as [[Winterfylleth]] (Ƿinterfylleþ), because at this full moon, winter was supposed to begin.<ref>{{Cite EB1911|wstitle=October}}</ref>
'''October''' is the 10th month of the year in the [[Julian calendar|Julian]] and [[Gregorian calendar]]s. Its length is 31 days. The eighth month in the old [[Roman calendar#Legendary 10 month calendar|calendar of Romulus]] {{circa|750 BC}}, October retained its name (from [[Latin language|Latin]] and [[Greek language|Greek]] ''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 [[Lapis manalis|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-Saxon]]s, it was known as [[Winterfylleth]] (Ƿinterfylleþ), because at this full moon, winter was supposed to begin.<ref>{{Cite EB1911|wstitle=October}}</ref>


October is commonly associated with the season of [[autumn]] in parts of the [[Northern Hemisphere]], and [[Spring (Season)|spring]] in parts of the [[Southern Hemisphere]], where it is the seasonal equivalent to [[April]] in the Northern Hemisphere and vice versa.
October is commonly associated with the season of [[autumn]] in parts of the [[Northern Hemisphere]], and [[Spring (Season)|spring]] in parts of the [[Southern Hemisphere]], where it is the seasonal equivalent to [[April]] in the Northern Hemisphere and vice versa.
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*In [[Catholic Church]] tradition, October is the Month of the Holy Rosary.<ref>{{cite web|url=http://www.newadvent.org/cathen/10542a.htm |title=CATHOLIC ENCYCLOPEDIA: Special Devotions For Months |publisher=Newadvent.org |access-date=2012-10-24}}</ref>
*In [[Catholic Church]] tradition, October is the Month of the Holy Rosary.<ref>{{cite web|url=http://www.newadvent.org/cathen/10542a.htm |title=CATHOLIC ENCYCLOPEDIA: Special Devotions For Months |publisher=Newadvent.org |access-date=2012-10-24}}</ref>
*[[National Breast Cancer Awareness Month|Breast Cancer Awareness Month]]
*[[National Breast Cancer Awareness Month|Breast Cancer Awareness Month]]
* Health Literacy Month<ref>{{cite web|url=http://www.healthliteracymonth.org/|title=Health Literacy Month – Finding the Right Words for Better Health|website=www.healthliteracymonth.org}}</ref>  
* Health Literacy Month<ref>{{cite web|url=http://www.healthliteracymonth.org/|title=Health Literacy Month – Finding the Right Words for Better Health|website=www.healthliteracymonth.org|access-date=2016-10-06|archive-date=2021-06-22|archive-url=https://web.archive.org/web/20210622041111/https://healthliteracymonth.org/|url-status=dead}}</ref>  
*[[Walk to school campaign#History of the campaign in Britain|International Walk to School Month]]  
*[[Walk to school campaign#History of the campaign in Britain|International Walk to School Month]]  
* Medical Ultrasound Awareness Month<ref>{{cite web|url=http://www.sdms.org/resources/muam|title=SDMS Medical Ultrasound Awareness Month|website=www.sdms.org}}</ref>  
* Medical Ultrasound Awareness Month<ref>{{cite web|url=http://www.sdms.org/resources/muam|title=SDMS Medical Ultrasound Awareness Month|website=www.sdms.org}}</ref>  
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* World Blindness Awareness Month<ref>[http://www.aao.org/aao/patients/eyemd/world_blindness.cfm] {{webarchive|url=https://web.archive.org/web/20070208072923/http://www.aao.org/aao/patients/eyemd/world_blindness.cfm|date=February 8, 2007}}</ref>
* World Blindness Awareness Month<ref>[http://www.aao.org/aao/patients/eyemd/world_blindness.cfm] {{webarchive|url=https://web.archive.org/web/20070208072923/http://www.aao.org/aao/patients/eyemd/world_blindness.cfm|date=February 8, 2007}}</ref>
*[[International Menopause Society#Resources and publication|World Menopause Month]]
*[[International Menopause Society#Resources and publication|World Menopause Month]]
* [[World Vegetarian Day|Vegetarian Awareness Month]]<ref>{{cite web| url = https://foodandnutrition.org/blogs/stone-soup/celebrate-vegetarian-awareness-month/| title = Hultin G. Why Celebrate Vegetarian Awareness Month? Food & Nutrition, October 7, 2014, Accessed November 14, 2018| date = 13 October 2021| access-date = November 15, 2018| archive-date = July 16, 2023| archive-url = https://web.archive.org/web/20230716113117/https://foodandnutrition.org/blogs/stone-soup/celebrate-vegetarian-awareness-month/| url-status = dead}}</ref><ref>{{cite web| url = https://oldwayspt.org/blog/vegetarian-awareness-month-celebrating-meatless-mindfulness| title = Vegetarian Awareness Month: Celebrating Meatless Mindfulness, Oldways website, September 28, 2017, Accessed November 14, 2018}}</ref><ref>{{cite web| url = https://worldvegetarianday.navs-online.org/| title = World Vegetarian Day, October 1. North American Vegetarian Society (the North American WVD sponsor explains that "World Vegetarian Day &#91;on&#93; October 1st is the annual kick-off of Vegetarian Awareness Month", accessed November 14, 2018}}</ref><ref>{{cite web| url = https://veganoutreach.org/world-vegetarian-awareness-month/| title = Palmer S. World Vegetarian Awareness Month. Vegan Outreach website, October 2, 2017, Accessed November 14, 2018| date = 3 October 2017}}</ref><ref>{{cite web| url = https://www.fix.com/blog/national-vegetarian-awareness-month/| title = October is National Vegetarian Awareness Month. Fix.com. October 1, 2014, Accessed November 14, 2018| date = October 2014}}{{Dead link|date=November 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref>{{cite web| url = https://www.fruitsandveggiesmorematters.org/celebrate-vegetarian-awareness-month| title = Celebrate Vegetarian Awareness Month. Fruits & Veggies: More Matters. Monday, October 14, 2013, at 4:00 am. Accessed November 14, 2018}}</ref><ref>{{Cite web |url=https://www.care2.com/greenliving/easy-ways-to-celebrate-vegetarian-awareness-month.html |title=Gerber J. 9 Easy Wasys to Celebrate Vegetarian Awareness Month. Care2. October 1, 2012. Accessed November 14, 2018 |access-date=November 15, 2018 |archive-date=November 15, 2018 |archive-url=https://web.archive.org/web/20181115112739/https://www.care2.com/greenliving/easy-ways-to-celebrate-vegetarian-awareness-month.html |url-status=dead }}</ref>
* [[World Vegetarian Day|Vegetarian Awareness Month]]<ref>{{cite web| url = https://foodandnutrition.org/blogs/stone-soup/celebrate-vegetarian-awareness-month/| title = Hultin G. Why Celebrate Vegetarian Awareness Month? Food & Nutrition, October 7, 2014, Accessed November 14, 2018| date = 13 October 2021| access-date = November 15, 2018| archive-date = July 16, 2023| archive-url = https://web.archive.org/web/20230716113117/https://foodandnutrition.org/blogs/stone-soup/celebrate-vegetarian-awareness-month/| url-status = dead}}</ref><ref>{{cite web| url = https://oldwayspt.org/blog/vegetarian-awareness-month-celebrating-meatless-mindfulness| title = Vegetarian Awareness Month: Celebrating Meatless Mindfulness, Oldways website, September 28, 2017, Accessed November 14, 2018| date = 28 September 2017}}</ref><ref>{{cite web| url = https://worldvegetarianday.navs-online.org/| title = World Vegetarian Day, October 1. North American Vegetarian Society (the North American WVD sponsor explains that "World Vegetarian Day &#91;on&#93; October 1st is the annual kick-off of Vegetarian Awareness Month", accessed November 14, 2018}}</ref><ref>{{cite web| url = https://veganoutreach.org/world-vegetarian-awareness-month/| title = Palmer S. World Vegetarian Awareness Month. Vegan Outreach website, October 2, 2017, Accessed November 14, 2018| date = 3 October 2017}}</ref><ref>{{cite web| url = https://www.fix.com/blog/national-vegetarian-awareness-month/| title = October is National Vegetarian Awareness Month. Fix.com. October 1, 2014, Accessed November 14, 2018| date = October 2014}}{{Dead link|date=November 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref>{{cite web| url = https://www.fruitsandveggiesmorematters.org/celebrate-vegetarian-awareness-month| title = Celebrate Vegetarian Awareness Month. Fruits & Veggies: More Matters. Monday, October 14, 2013, at 4:00 am. Accessed November 14, 2018}}</ref><ref>{{Cite web |url=https://www.care2.com/greenliving/easy-ways-to-celebrate-vegetarian-awareness-month.html |title=Gerber J. 9 Easy Wasys to Celebrate Vegetarian Awareness Month. Care2. October 1, 2012. Accessed November 14, 2018 |access-date=November 15, 2018 |archive-date=November 15, 2018 |archive-url=https://web.archive.org/web/20181115112739/https://www.care2.com/greenliving/easy-ways-to-celebrate-vegetarian-awareness-month.html |url-status=dead }}</ref>


==== United States ====
==== United States ====
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*American Archives Month<ref>{{Cite news|url=https://www.archives.gov/news/topics/american-archives-month|title=American Archives Month|date=2017-06-22|work=National Archives|access-date=2018-09-25|language=en}}</ref>
*American Archives Month<ref>{{Cite news|url=https://www.archives.gov/news/topics/american-archives-month|title=American Archives Month|date=2017-06-22|work=National Archives|access-date=2018-09-25|language=en}}</ref>
*National Adopt a Shelter Dog Month <ref>{{cite web|url=http://www.aspca.org/adopt/adopt-a-shelter-dog-month| title=October is Adopt a Shelter Dog Month|publisher=ASPCA|access-date=2014-10-17}}</ref>
*National Adopt a Shelter Dog Month<ref>{{cite web|url=http://www.aspca.org/adopt/adopt-a-shelter-dog-month| title=October is Adopt a Shelter Dog Month|publisher=ASPCA|access-date=2014-10-17}}</ref>
*[[National Arts & Humanities Month]]  
*[[National Arts & Humanities Month]]  
*National Bullying Prevention Month
*National Bullying Prevention Month
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* American Pharmacist Month<ref>{{cite web |url=http://www.pharmacist.com/aphm |archive-url=https://archive.today/20071011161022/http://www.pharmacist.com/aphm |url-status=dead |archive-date=October 11, 2007 |title=American Pharmacists Month 2011 |publisher=Pharmacist.com |access-date=2011-11-01 }}</ref>
* American Pharmacist Month<ref>{{cite web |url=http://www.pharmacist.com/aphm |archive-url=https://archive.today/20071011161022/http://www.pharmacist.com/aphm |url-status=dead |archive-date=October 11, 2007 |title=American Pharmacists Month 2011 |publisher=Pharmacist.com |access-date=2011-11-01 }}</ref>
*Celebrating All of October Dwarfism/Little People/Short Stature/Skeletal Dysplasia Awareness<ref>{{cite web|url=https://www.littlepeopleoftheworld.org/dwarfism-awareness|title=Little People of the World}}{{dead link|date=October 2021}}</ref>
*Celebrating All of October Dwarfism/Little People/Short Stature/Skeletal Dysplasia Awareness<ref>{{cite web|url=https://www.littlepeopleoftheworld.org/dwarfism-awareness|title=Little People of the World}}{{dead link|date=October 2021}}</ref>
*Dwarfism/Little People Awareness Month <ref>{{cite web |url=http://www.lpaonline.org/dwarfism-awareness-month-press-release |title=Little People of America |access-date=2014-09-30 |archive-date=2014-10-06 |archive-url=https://web.archive.org/web/20141006074930/http://www.lpaonline.org/dwarfism-awareness-month-press-release |url-status=dead }}</ref>
*Dwarfism/Little People Awareness Month<ref>{{cite web |url=http://www.lpaonline.org/dwarfism-awareness-month-press-release |title=Little People of America |access-date=2014-09-30 |archive-date=2014-10-06 |archive-url=https://web.archive.org/web/20141006074930/http://www.lpaonline.org/dwarfism-awareness-month-press-release |url-status=dead }}</ref>
*Eczema Awareness Month <ref name="nationaleczema.org">{{cite web|url=http://nationaleczema.org/get-involved/eczema-awareness-month/|title=Eczema Awareness Month – National Eczema Association|work=National Eczema Association|access-date=2015-05-19|archive-date=2015-05-20|archive-url=https://web.archive.org/web/20150520184429/http://nationaleczema.org/get-involved/eczema-awareness-month/|url-status=dead}}</ref>  
*Eczema Awareness Month <ref name="nationaleczema.org">{{cite web|url=http://nationaleczema.org/get-involved/eczema-awareness-month/|title=Eczema Awareness Month – National Eczema Association|work=National Eczema Association|access-date=2015-05-19|archive-date=2015-05-20|archive-url=https://web.archive.org/web/20150520184429/http://nationaleczema.org/get-involved/eczema-awareness-month/|url-status=dead}}</ref>  
* National [[Oral Hygiene|Dental Hygiene]] Month<ref>{{cite web|url=http://www.adha.org/ndhm/ |title=ADHA – October is National Dental Hygiene Month |publisher=Adha.org |access-date=2011-11-01}}</ref>
* National [[Oral Hygiene|Dental Hygiene]] Month<ref>{{cite web|url=http://www.adha.org/ndhm/ |title=ADHA – October is National Dental Hygiene Month |publisher=Adha.org |access-date=2011-11-01}}</ref>
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* National [[Physical Therapy]] Month<ref>[http://www.apta.org/AM/Template.cfm?Section=National_PT_Month&Template=/TaggedPage/TaggedPageDisplay.cfm&TPLID=155&ContentID=28220 APTA | National Physical Therapy Month]  {{webarchive|url=https://web.archive.org/web/20090105123101/http://www.apta.org/AM/Template.cfm?Section=National_PT_Month&Template=%2FTaggedPage%2FTaggedPageDisplay.cfm&TPLID=155&ContentID=28220 |date=January 5, 2009 }}</ref>
* National [[Physical Therapy]] Month<ref>[http://www.apta.org/AM/Template.cfm?Section=National_PT_Month&Template=/TaggedPage/TaggedPageDisplay.cfm&TPLID=155&ContentID=28220 APTA | National Physical Therapy Month]  {{webarchive|url=https://web.archive.org/web/20090105123101/http://www.apta.org/AM/Template.cfm?Section=National_PT_Month&Template=%2FTaggedPage%2FTaggedPageDisplay.cfm&TPLID=155&ContentID=28220 |date=January 5, 2009 }}</ref>
* National [[Spina Bifida]] Awareness Month<ref>{{cite web |url=http://www.sbaa.org/site/c.gpILKXOEJqG/b.2016945/k.2321/Spina_Bifida_Association_Web_site.htm |title=Spina Bifida Association – Spina Bifida Association |publisher=Sbaa.org |access-date=2011-11-01 |archive-url=https://web.archive.org/web/20071014011920/http://www.sbaa.org/site/c.gpILKXOEJqG/b.2016945/k.2321/Spina_Bifida_Association_Web_site.htm |archive-date=2007-10-14 |url-status=dead }}</ref>
* National [[Spina Bifida]] Awareness Month<ref>{{cite web |url=http://www.sbaa.org/site/c.gpILKXOEJqG/b.2016945/k.2321/Spina_Bifida_Association_Web_site.htm |title=Spina Bifida Association – Spina Bifida Association |publisher=Sbaa.org |access-date=2011-11-01 |archive-url=https://web.archive.org/web/20071014011920/http://www.sbaa.org/site/c.gpILKXOEJqG/b.2016945/k.2321/Spina_Bifida_Association_Web_site.htm |archive-date=2007-10-14 |url-status=dead }}</ref>
* [[Sudden infant death syndrome|Sudden Infant Death Syndrome]] Awareness Month <ref>{{cite web|url=https://www.nichd.nih.gov/news/resources/spotlight/Pages/102014-october-SIDS.aspx|title=October is SIDS Awareness Month|website=www.nichd.nih.gov|date=20 October 2014 }}</ref> (United States)
* [[Sudden infant death syndrome|Sudden Infant Death Syndrome]] Awareness Month<ref>{{cite web|url=https://www.nichd.nih.gov/newsroom/resources/spotlight/102014-october-SIDS|title=October is SIDS Awareness Month|website=www.nichd.nih.gov|date=20 October 2014 }}</ref> (United States)


===== United States, culinary =====
===== United States, culinary =====
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*[[Daylight saving time]] begins ([[Australia]])
*[[Daylight saving time]] begins ([[Australia]])
*[[Father's Day]] ([[Luxembourg]])
*[[Father's Day]] ([[Luxembourg]])
*[[National Grandparents Day#Australia|Grandparents Day]] ([[Queensland]], [[Australia]], [[United Kingdom]])  
*[[National Grandparents Day#Australia|Grandparents Day]] ([[Queensland]], Australia, [[United Kingdom]])  
*[[Teachers' Day]] ([[Belarus]], [[Latvia]], [[Ukraine]])
*[[Teachers' Day]] ([[Belarus]], [[Latvia]], [[Ukraine]])


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* [[Child Health Day]] ([[United States]])  
* [[Child Health Day]] ([[United States]])  
* [[Children's Day]] ([[Chile]], [[Singapore]])
* [[Children's Day]] ([[Chile]], [[Singapore]])
* [[Labour Day]] ([[Australian Capital Territory]], [[New South Wales]], [[South Australia]], [[Queensland]], [[Australia]])
* [[Labour Day]] ([[Australian Capital Territory]], [[New South Wales]], [[South Australia]], [[Queensland]], Australia)
* [[Peat Cutting Monday]] ([[Falkland Islands]])
* [[Peat Cutting Monday]] ([[Falkland Islands]])
* [[Thanksgiving]] ([[Saint Lucia]])
* [[Thanksgiving]] ([[Saint Lucia]])
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==== First Tuesday ====
==== First Tuesday ====
*[[National Night Out]] ([[Florida]] and [[Texas]], [[United States]])
*[[National Night Out]] ([[Florida]] and [[Texas]], United States)


==== First Wednesday ====
==== First Wednesday ====
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*[[Columbus Day]] ([[United States]])
*[[Columbus Day]] ([[United States]])
**[[Indigenous Peoples' Day (United States)|Indigenous Peoples' Day]] (Parts of the United States)
**[[Indigenous Peoples' Day (United States)|Indigenous Peoples' Day]] (Parts of the United States)
**[[Native American Day]] ([[South Dakota]], [[United States]])
**[[Native American Day]] ([[South Dakota]], United States)
*[[Fraternal Day]] ([[Alabama]], [[United States]])
*[[Fraternal Day]] ([[Alabama]], United States)
*[[Health and Sports Day]] ([[Japan]])
*[[Health and Sports Day]] ([[Japan]])
*[[Public holidays in Malawi|Mother's Day]] ([[Malawi]])
*[[Public holidays in Malawi|Mother's Day]] ([[Malawi]])
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==== Last Friday ====
==== Last Friday ====
*[[CanTeen|National Bandanna Day]] ([[Australia]])
*[[CanTeen|National Bandanna Day]] ([[Australia]])
*[[Nevada Day]] ([[Nevada]], [[United States]]) (though the state was actually admitted on October 31, 1864)
*[[Nevada Day]] ([[Nevada]], United States) (though the state was actually admitted on October 31, 1864)
*[[Teacher's Day]] ([[Australia]]) (If the last Friday is on October 31, this holiday is moved to November 7)
*[[Teacher's Day]] ([[Australia]]) (If the last Friday is on October 31, this holiday is moved to November 7)


==== Last Sunday ====
==== Last Sunday ====
*[[Daylight saving time|European Summer Time]] ends
*[[Daylight saving time|European Summer Time]] ends
*[[National Grandparents Day#Australia|Grandparents Day]] ([[New South Wales]], [[Australia]])
*[[National Grandparents Day#Australia|Grandparents Day]] ([[New South Wales]], Australia)
*[[Székely Autonomy Day]] ([[Romania]])<ref>{{cite news|url=https://transylvanianow.com/brussels-should-pay-attention-to-the-szeklers-day-of-szekler-autonomy/|title="Brussels should pay attention to the Szeklers" – Day of Szekler Autonomy|first=Attila|last=Szoó|newspaper=Transylvania Now|date=26 October 2020}}</ref>
*[[Székely Autonomy Day]] ([[Romania]])<ref>{{cite news|url=https://transylvanianow.com/brussels-should-pay-attention-to-the-szeklers-day-of-szekler-autonomy/|title="Brussels should pay attention to the Szeklers" – Day of Szekler Autonomy|first=Attila|last=Szoó|newspaper=Transylvania Now|date=26 October 2020}}</ref>


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**[[Children's Day]] ([[El Salvador]], [[Guatemala]], [[Sri Lanka]])
**[[Children's Day]] ([[El Salvador]], [[Guatemala]], [[Sri Lanka]])
**[[Public holidays in Azerbaijan|Day of Prosecutors]] ([[Azerbaijan]])
**[[Public holidays in Azerbaijan|Day of Prosecutors]] ([[Azerbaijan]])
**Continuance of [[List of Month-long observances#October|German-American Heritage Months]], which runs from September 15 – October 15 <ref>{{cite web|url=http://www.umuc.edu/diversity/german.cfm|title=Diversity – UMUC|website=www.umuc.edu|access-date=2016-08-20|archive-date=2016-09-19|archive-url=https://web.archive.org/web/20160919112457/http://www.umuc.edu/diversity/german.cfm|url-status=dead}}</ref> ([[United States]])
**Continuance of [[List of Month-long observances#October|German-American Heritage Months]], which runs from September 15 – October 15<ref>{{cite web|url=http://www.umuc.edu/diversity/german.cfm|title=Diversity – UMUC|website=www.umuc.edu|access-date=2016-08-20|archive-date=2016-09-19|archive-url=https://web.archive.org/web/20160919112457/http://www.umuc.edu/diversity/german.cfm|url-status=dead}}</ref> ([[United States]])
**Continuance of [[National Hispanic Heritage Month]] which runs from September 15 – October 15 ([[United States]]),
**Continuance of [[National Hispanic Heritage Month]] which runs from September 15 – October 15 ([[United States]]),
**[[Public holidays in Russia#List of other public holidays, commemorative and professional days|Ground Forces Day]] ([[Russia]])  
**[[Public holidays in Russia#List of other public holidays, commemorative and professional days|Ground Forces Day]] ([[Russia]])  
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**[[Caps lock#International Caps Lock Day|International Caps Lock Day]]  
**[[Caps lock#International Caps Lock Day|International Caps Lock Day]]  
**[[International Stuttering Awareness Day]]  
**[[International Stuttering Awareness Day]]  
**[[Jidai Matsuri]] ([[Kyoto]], [[Japan]])
**[[Jidai Matsuri]] ([[Kyoto]], Japan)
**[[Public holidays in Indonesia|National Santri Day]] ([[Indonesia]])
**[[Public holidays in Indonesia|National Santri Day]] ([[Indonesia]])
**[[Wombat Day]] ([[Australia]])
**[[Wombat Day]] ([[Australia]])
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**[[Día de la Canción Criolla]] ([[Peru]])
**[[Día de la Canción Criolla]] ([[Peru]])
**Eve of Winter, the eve of the first day of winter in the Northern hemisphere:
**Eve of Winter, the eve of the first day of winter in the Northern hemisphere:
***[[Allantide]] ([[Cornwall]], [[United Kingdom]])
***[[Allantide]] ([[Cornwall]], United Kingdom)
***[[Halloween]] ([[Halloween around the world|English-speaking countries, also in other locations]])
***[[Halloween]] ([[Halloween around the world|English-speaking countries, also in other locations]])
***[[Hop-tu-Naa]] ([[Isle of Man]], [[United Kingdom]])
***[[Hop-tu-Naa]] ([[Isle of Man]])
***[[Samhain]] in the Northern Hemisphere, [[Beltane]] in the Southern Hemisphere; begins on sunset of October 31 ([[Gaelic calendar|Gaels]], [[Welsh people]] and [[Neopagan]] [[Wheel of the Year]])
***[[Samhain]] in the Northern Hemisphere, [[Beltane]] in the Southern Hemisphere; begins on sunset of October 31 ([[Gaelic calendar|Gaels]], [[Welsh people]] and [[Neopagan]] [[Wheel of the Year]])
**[[Scouts' Day#Founders.27 Days|Girl Scouts Founders Day]] ([[United States]])
**[[Scouts' Day#Founders.27 Days|Girl Scouts Founders Day]] ([[United States]])

Revision as of 12:19, 31 October 2025

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File:Maple leaf in fall.jpg
Red maple (Acer rubrum) leaf in October (Northern hemisphere).
File:10 October - Percent of global area at temperature records - Global warming - NOAA.svg
In recent decades, the number of warm temperature records in October has outpaced cold temperature records over a growing portion of Earth's surface.[1]

October is the 10th month of the year in the Julian and Gregorian calendars. Its length is 31 days. The eighth month in the old calendar of Romulus c.Template:TrimScript error: No such module "Check for unknown parameters"., October retained its name (from Latin and Greek 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 Winterfylleth (Ƿinterfylleþ), because at this full moon, winter was supposed to begin.[2]

October is commonly associated with the season of autumn in parts of the Northern Hemisphere, and spring in parts of the Southern Hemisphere, where it is the seasonal equivalent to April in the Northern Hemisphere and vice versa.

Symbols

File:Calendula January 2008-1 filtered.jpg
The calendula
An opal armband. Opal is the birthstone for October.
An opal armband. Opal is the birthstone for October.
Cut tourmaline
Cut tourmaline

October's birthstones are the tourmaline and opal.[3] Its birth flower is the calendula.[4] The zodiac signs are Libra (until October 22) and Scorpio (from October 23 onward).[5][6]

Observances

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

File:Beata Vergine Maria, Madonna del Rosario.jpg
Our Lady of the Most Holy Rosary, whose devotion and Feast are celebrated in October

Non-Gregorian: 2026 dates

(All Baha'i, Islamic, and Jewish observances begin at the sundown prior to the date listed, and end at sundown of the date in question unless otherwise noted.)

Month-long

United States

The last two to three weeks in October (and, occasionally, the first week of November) are normally the only time of the year during which all of the "Big Four" major professional sports leagues in the U.S. and Canada schedule games; the National Basketball Association begins its preseason and about two weeks later starts the regular season, the National Hockey League is in the first month of 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. Days on which all four leagues play are colloquially known as a sports equinox.[19]

United States, health-related
United States, culinary

Movable dates

First Sunday

First Monday

First Tuesday

First Wednesday

First Thursday

First Friday

First full week

Second Sunday

Second Monday

Second Tuesday

Second Wednesday

Wednesday of second full week in October

Second Thursday

Second Friday

Second Saturday

Week of October 10

Second Week of October

Third Sunday

Third Monday

Third Thursday

Third Saturday

Fourth Monday

Fourth Wednesday

Fourth Friday

Fourth Saturday

Week of Fourth Wednesday

Last Monday

Last Friday

Last Sunday

Fixed

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

Miscellaneous

References

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External links

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