Editing October (section)

=== Movable dates ===
*[[Oktoberfest celebrations]] (varies globally based on area)
*[[Astronomy Day]]: October 1 
*[[World Cerebral Palsy Day]]: October 6
*[[World College Radio Day]]: October 7
*[[Earth Science Week]]: October 9–15
*See also [[Movable Western Christian observances]]
*See also [[Movable Eastern Christian observances]]

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

==== First Monday ====
* [[Child Health Day]] ([[United States]]) 
* [[Children's Day]] ([[Chile]], [[Singapore]])
* [[Labour Day]] ([[Australian Capital Territory]], [[New South Wales]], [[South Australia]], [[Queensland]], [[Australia]])
* [[Peat Cutting Monday]] ([[Falkland Islands]])
* [[Thanksgiving]] ([[Saint Lucia]])
* [[Australian Architecture Association|World Architecture Day]] 
* [[World Habitat Day]]

==== First Tuesday ====
*[[National Night Out]] ([[Florida]] and [[Texas]], [[United States]])

==== First Wednesday ====
*[[Children's Day#Chile|Children's Day]] ([[Chile]])

==== First Thursday ====
*[[National Poetry Day]] (UK, Ireland)

==== First Friday ====
*[[Children's Day]] ([[Singapore]])
*[[Lee National Denim Day]] ([[United States]])
*[[World Smile Day]]

==== First full week ====
*[[Albuquerque International Balloon Fiesta]] ([[United States]])
*[[Mental Illness Awareness Week]] ([[United States]])

==== Second Sunday ====
*[[National Grandparents Day#Germany|National Grandparents Day]] ([[Germany]], [[Hong Kong]])

==== Second Monday ====
*[[Columbus Day]] ([[United States]])
**[[Indigenous Peoples' Day (United States)|Indigenous Peoples' Day]] (Parts of the United States)
**[[Native American Day]] ([[South Dakota]], [[United States]])
*[[Fraternal Day]] ([[Alabama]], [[United States]])
*[[Health and Sports Day]] ([[Japan]])
*[[Public holidays in Malawi|Mother's Day]] ([[Malawi]])
*[[Public holidays in Norfolk Island|Norfolk Island Agricultural Show Day]] ([[Norfolk Island]])
*[[Thanksgiving (Canada)]]
*[[National Day]] ([[Republic of China]])

==== Second Tuesday ====
*[[Ada Lovelace Day]]

==== Second Wednesday ====
*[[September Declaration|Policy Statement of Belgian Parliament]] ([[Belgium]])

==== Wednesday of second full week in October ====
*[[National Fossil Day]] ([[United States]])

==== Second Thursday ====
*[[World Sight Day]]

==== Second Friday ====
*[[Arbor Day]] ([[Namibia]]) 
*[[List of food days#Global or international|World Egg Day]]

==== Second Saturday ====
*[[Bird Day|International Migratory Bird Day]] ([[Mexico]], [[Central America|Central]] and [[South America]], and the [[Caribbean]])
*[[Home Movie Day]] ([[International observance]])
*[[Arbor Day#Mongolia|National Tree Planting Day]] ([[Mongolia]])

==== Week of October 10 ====
*[[Fiji Week]] ([[Fiji]])

==== Second Week of October ====
*[[Fire Prevention Week]] ([[Canada]], [[United States]])
**[[Fire Prevention Week|Fire Service Recognition Day]] ([[Canada]]), last day of Fire Prevention Week: 

==== Third Sunday ====
*[[Teacher's Day]] ([[Brazil]])
*[[Mother's Day]] ([[Argentina]])

==== Third Monday ====
*[[Heroes' Day]] ([[Jamaica]]) 
*[[Mother's Day]] ([[Argentina]])
*[[Nanomonestotse]] ([[Native Americans in the United States|Native American]] communities)
*[[Boss's Day]] (United States, Canada, Lithuania and Romania)

==== Third Thursday ====
*[[World Council of Credit Unions#International Credit Union Day|International Credit Union Day]]

==== Third Saturday ====
*[[Sweetest Day]] ([[United States]])

==== Fourth Monday ====
*[[Labour Day#New Zealand|Labour Day]] ([[New Zealand]])

==== Fourth Wednesday ====
*[[Children's Day]] ([[Australia]])

==== Fourth Friday ====
*[[List of food days#Global or international|Global Champagne Day]]

==== Fourth Saturday ====
*[[Children's Day]] ([[Malaysia]])
*[[USA Weekend#Make a Difference Day|Make a Difference Day]] ([[United States]])

==== Week of Fourth Wednesday ====
*[[Children's Day#Australia|Children's Week]] ([[Australia]])

==== Last Monday ====
*[[October Holiday]] ([[Ireland]])

==== Last Friday ====
*[[CanTeen|National Bandanna Day]] ([[Australia]])
*[[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)

==== Last Sunday ====
*[[Daylight saving time|European Summer Time]] ends
*[[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>