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All holidays for the month of October in alphabetical order.
- 40 Hour Work Week Day – October 24, 2023
- Accounting Day – October 24, 2022
- Ada Lovelace Day – October 10, 2023
- Alaska Day – October 18, 2023
- All Hallows Eve – October 31, 2023
- Allantide – October 28, 2023
- Alvin C. York Day – October 8, 2023
- American Beer Day – October 27, 2023
- American Libraries Day – October 6, 2023
- American Touch Tag Day – October 8, 2023
- Apple Day – October 21, 2023
- Babbling Day – October 21, 2023
- Back to the Future Day – October 21, 2023
- Balloons Around The World Day – October 4, 2023
- Bathtub Day – October 7, 2023
- Be Bald and Be Free Day – October 14, 2023
- Bed & Breakfast Inn Mascot Day – October 7, 2023
- Beggars’ Night – October 31, 2023
- Black Poetry Day – October 17, 2023
- Black Thursday – October 24, 2023
- Blessing of the Animals at the Cathedral Day – October 4, 2023
- Blind Americans Equality Day – October 15, 2023
- Blue Shirt Day World Day of Bullying Prevention – October 2, 2023
- Bonza Bottler Day – October 10, 2023
- Books For Treats Day – October 31, 2023
- Boxer Shorts Day – October 27, 2023
- BRA Day USA – October 18, 2023
- Breast Health Day – October 15, 2023
- Bridge Day – October 21, 2023
- Bullying Prevention Day – October 11, 2023
- Butterfly and Hummingbird Day – October 3, 2023
- Buy a Donut Day – October 30, 2023
- CAPS Lock Day – October 22, 2023
- Caramel Apple Day – October 21, 2023
- Carve a Pumpkin Day – October 31, 2023
- CD Player Day – October 1, 2023
- Celebration of the Mind Day – October 21, 2023
- Cephalopod Awareness Day – October 7, 2023
- Champagne Day – October 28, 2023
- Change a Light Day – October 1, 2023
- Check Your Meds Day – October 21, 2023
- Checklist Day – October 30, 2023
- Chic Spy Day – October 5, 2023
- Chicken Fried Steak Day – October 26, 2023
- Child Health Day – October 2, 2023
- Chucky, The Notorious Killer Doll Day – October 25, 2023
- Clean Up the Earth Day – October 22, 2023
- Pastor Appreciation Day – October 8, 2023
- Coffee With A Cop Day – October 4, 2023
- Columbus Day – October 9, 2023
- Come and Take it Day – October 6, 2023
- Community Media Day – October 20, 2023
- Conflict Resolution Day – October 19, 2023
- Cookbook Launch Day – October 12, 2023
- Count Your Buttons Day – October 21, 2023
- Country Inn Bed & Breakfast Day – October 1, 2023
- Cranky Co-workers Day – October 27, 2023
- Create a Great Funeral Day – October 30, 2023
- Curious Events Day – October 9, 2023
- Day of the Deployed – October 26, 2023
- Day of the Seven Billion – October 31, 2023
- Day of the Six Billion – October 12, 2023
- Day of Unity – October 2, 2023
- Department Store Day – October 16, 2023
- Developmental Language Disorder Awareness Day – October 18, 2023
- Devil’s Night – October 30, 2023
- Dick Tracy Day – October 4, 2023
- Dictionary Day – October 16, 2023
- Digital Scrapbooking Day – October 7, 2023
- Do Something Nice Day – October 5, 2023
- Dress Like a Dork Day – October 19, 2023
- Drink Local Wine Day – October 12, 2023
- Dussehra – October 24, 2023
- Eat a Pretzel Day – October 22, 2023
- Ecological Debt Day – October 6, 2023
- eDay – October 4, 2023
- Emergency Nurses Day – October 11, 2023
- English Language Day – October 13, 2023
- Evaluate Your Life Day – October 19, 2023
- Event Organizers Day – October 23, 2023
- Father-Daughter Day – October 8, 2023
- Feast of St. Francis of Assisi – October 4, 2023
- Fire Prevention Day – October 9, 2023
- Food Day – October 24, 2023
- Forgive an Ex Day – October 17, 2023
- Four Prunes Day – October 17, 2023
- Frankenstein Friday – October 27, 2023
- Free Thought Day – October 12, 2023
- Friday the 13th – October 13, 2023
- Frugal Fun Day – October 7, 2023
- Garbanzo Bean Day – October 21, 2023
- Garlic Lover’s Day – October 6, 2023
- General Pulaski Memorial Day – October 11, 2023
- Germany Unity Day – October 3, 2023
- Get Funky Day – October 5, 2023
- Get Smart About Credit Day – October 19, 2023
- Get to Know Your Customer Day – October 19, 2023
- Girl Scout Founder’s Day – October 31, 2023
- Global Cat Day – October 16, 2023
- Global Champagne Day – October 20, 2023
- Global Dignity Day – October 18, 2023
- Global Handwashing Day – October 15, 2023
- Global Iodine Deficiency Disorder Prevention Day – October 21, 2023
- Global James Bond Day – October 5, 2023
- Global Smoothie Day – October 3, 2023
- Good and Plenty Day – October 24, 2023
- Good Samaritan Day – October 13, 2023
- Guardian Angels Day – October 2, 2023
- Hagfish Day – October 18, 2023
- Halloween – October 31, 2023
- Hard Boiled Guy/Girl Day – October 18, 2023
- Haunted Refrigerator Night – October 30, 2023
- Headspace Day Australia) – October 10, 2023
- Homemade Cookies Day – October 1, 2023
- Horseless Carriage Day – October 26, 2023
- Howl at the Moon Night – October 26, 2023
- Hug a Drummer Day – October 10, 2023
- Hug a Sheep Day – October 28, 2023
- I Love Lucy Day – October 15, 2023
- I Love Yarn Day – October 14, 2023
- Improve Your Office Day – October 4, 2023
- Indigenous People’s Day – October 9, 2023
- Information Overload Day – October 17, 2023
- Inter-American Water Day – October 7, 2023
- Intergeneration Day – October 1, 2023
- International Adjust Your Chair Day – October 16, 2023
- International African Diaspora Day – October 1, 2023
- International African Penguin Awareness Day – October 14, 2023
- International Animation Day – October 28, 2023
- International Artists Day – October 25, 2023
- International Bandanna Day – October 27, 2023
- International Beer and Pizza Day – October 9, 2023
- International Blessings of the Fishing Fleet Day – October 1, 2023
- International Cassette Store Day – October 17, 2023
- International Chef’s Day – October 20, 2023
- International Coffee Day ) – October 1, 2023
- International Credit Union Day – October 19, 2023
- International Day for Disaster Reduction – October 13, 2023
- International Day for Failure – October 13, 2023
- International Day for Natural Disaster Reduction – October 11, 2023
- International Day for the Eradication of Poverty – October 17, 2023
- International Day of No Prostitution – October 5, 2023
- International Day of Non-Violence – October 2, 2023
- International Day of Older Persons – October 1, 2023
- International Day of Rural Women – October 15, 2023
- International Day of the Girl Child – October 11, 2023
- International Day of the Nacho – October 21, 2023
- International Gin and Tonic Day – October 19, 2023
- International Independent Video Store Day – October 21, 2023
- International Internet Day – October 29, 2023
- International Lesbian Day – October 8, 2023
- International Moment of Frustration Scream Day – October 12, 2023
- International Music Day – October 1, 2023
- International Necktie Day – October 18, 2023
- International Newspaper Carrier Day – October 7, 2023
- International Plain Language Day – October 13, 2023
- International Print Day – October 18, 2023
- International Raccoon Appreciation Day – October 1, 2023
- International Repair Day – October 21, 2023
- International Shakeout Day – October 19, 2023
- International Sloth Day – October 20, 2023
- International Stage Management Day – October 10, 2023
- International Stuttering Awareness Day – October 22, 2023
- International Suit Up Day – October 13, 2023
- International Toot Your Flute Day – October 4, 2023
- International Top Spinning Day – October 11, 2023
- International Walk to School Day – October 4, 2023
- Intersex Awareness Day – October 26, 2023
- IPod Day – October 23, 2023
- Jackie Mayer Rehab Day – October 6, 2023
- Kanelbullens Dag (Cinnamon Bun Day) – October 4, 2023
- Kid’s Music Day – October 6, 2023
- Kimberly Day – October 11, 2023
- Kiwanis One Day – October 28, 2023
- LED Light Day – October 7, 2023
- Lee’s National Denim Day – October 6, 2023
- Leif Erikson Day – October 9, 2023
- Less than Perfect Day – October 1, 2023
- LGBT Center Awareness Day – October 19, 2023
- Lincolnshire Day – October 1, 2023
- Look at the Leaves Day! – October 3, 2023
- Love Your Body Day – October 18, 2023
- Lung Health Day October 23, 2023 – October 23, 2023
- Mad Hatter Day – October 6, 2023
- Magic Day – October 31, 2023
- Make a Difference Day – October 28, 2023
- Mammography Day – October 20, 2023
- MDS World Awareness Day – October 25, 2023
- Mean Girls Appreciation Day – October 3, 2023
- Meatloaf Appreciation Day – October 18, 2023
- Medical Assistants Recognition Day – October 18, 2023
- Mince Meat Pie Day – October 26, 2023
- Mischief Night – October 30, 2023
- Miss American Rose Day – October 20, 2023
- Model T Day – October 1, 2023
- Moldy Cheese Day – October 9, 2023
- Mother-in-Law Day – October 22, 2023
- Motorsports Memorial Day – October 10, 2023
- Mulligan Day – October 17, 2023
- Multicultural Diversity Day – October 16, 2023
- My Mom is a Student Day – October 15, 2023
- Myths & Legends Day For All Fantasy Movie, Books, and Legends Cephalopods – October 11, 2023
- National Aesthetician Day – October 15, 2023
- National Angel Food Cake Day – October 10, 2023
- National Apple Betty Day – October 5, 2023
- National Badger Day – October 6, 2023
- National Black Cat Day – October 27, 2023
- National Black Dog Day – October 1, 2023
- National Body Language Day – October 6, 2023
- National Bologna Day – October 24, 2023
- National Book It Day – October 1, 2023
- National Boss Day – October 16, 2023
- National Boston Cream Pie Day – October 23, 2023
- National Boyfriend Day – October 3, 2023
- National Brandied Fruit Day – October 20, 2023
- National Breadstix Day – October 27, 2023
- National Bring Your Teddy Bear to Work & School Day – October 11, 2023
- National Cake Decorating Day – October 10, 2023
- National Call-In Day for Health Reform – October 20, 2023
- National Candy Corn Day – October 30, 2023
- National Canning Day – October 23, 2023
- National Caramel Apple Day – October 31, 2023
- National Caramel Custard Day – October 3, 2023
- National Cartoonists Against Crime Day – October 25, 2023
- National Cat Day – October 29, 2023
- National Cheese Curd Day – October 15, 2023
- National Chess Day – October 14, 2023
- National Chess Day – October 14, 2023
- National Chicken Cacciatore Day – October 15, 2023
- National Children’s Day – October 8, 2023
- National Chocolate Covered Insects Day – October 14, 2023
- National Chocolate Cupcake Day – October 18, 2023
- National Chocolate Day – October 28, 2023
- National Clean Your Virtual Desktop Day – October 16, 2023
- National Coaches Day – October 6, 2023
- National Color Day – October 22, 2023
- National Coming Out Day – October 11, 2023
- National Consignment Day – October 2, 2023
- National Costume Swap Day – October 14, 2023
- National Crazy Day – October 24, 2023
- National Croc Day – October 23, 2023
- National Curves Day – October 14, 2023
- National Custodial Workers Day – October 2, 2023
- National Cut Up Your Credit Card Day – October 16, 2023
- National Day of the Deployed – October 26, 2023
- National Day on Writing – October 20, 2023
- National Depression Screening Day – October 5, 2023
- National Dessert Day – October 14, 2023
- National Diversity Day – October 6, 2023
- National Doorbell Day – October 31, 2023
- National Edge Day – October 17, 2023
- National Face Your Fears Day – October 17, 2023
- National Family Bowling Day – October 13, 2023
- National Family TV Show Day – October 3, 2023
- National Farmers Day – October 12, 2023
- National Feral Cat Day – October 16, 2023
- National Fetch Day – October 21, 2023
- National Fire Pup Day – October 1, 2023
- National Flower Day – October 7, 2023
- National Fluffernutter Day – October 8, 2023
- National Food Truck Day – October 11, 2023
- National Forgiveness Day – October 7, 2023
- National Fossil Day – October 11, 2023
- National Frappe Day – October 7, 2023
- National Fried Scallops Day – October 2, 2023
- National Fruit at Work Day – October 3, 2023
- National FRUMP Day – October 14, 2023
- National G.O.E. – October 8, 2023
- National German-American Day – October 6, 2023
- National Golf Day – October 4, 2023
- National Greasy Foods Day – October 25, 2023
- National Grouch Day – October 15, 2023
- National Gumbo Day – October 12, 2023
- National Hair Day – October 1, 2023
- National Handbag Day – October 10, 2023
- National Hermit Day – October 29, 2023
- National HSA Awareness Day – October 15, 2023
- National Hug a Kevin Day – October 10, 2023
- National Hydrogen and Fuel Cell Day – October 8, 2023
- National I Care About You Day – October 25, 2023
- National Increase Your Psychic Powers Day – October 31, 2023
- National Inner Beauty Day – October 7, 2023
- National It’s My Party Day – October 11, 2023
- National Kale Day – October 4, 2023
- National Kick Butt Day – October 9, 2023
- National Kids Bowl Free Day – October 14, 2023
- National Kiss a Wrestler Day – October 5, 2023
- National Knee Day – October 22, 2023
- National Knock Knock Jokes Day – October 31, 2023
- National Lace Day – October 1, 2023
- National Latino AIDS Awareness Day – October 15, 2023
- National Learn a Word Day – October 16, 2023
- National Lemon Bar Day – October 15, 2023
- National Liqueur Day – October 16, 2023
- National Love Your Hair Day – October 10, 2023
- National lowercase Day – October 14, 2023
- National M & M Day – October 13, 2023
- National Make a Dogs Day – October 22, 2023
- National Manufacturing Day – October 6, 2023
- National Mentoring Day U.K.) – October 27, 2023
- National Metastatic Breast Cancer Day – October 13, 2023
- National Metric Day – October 10, 2023
- National Mole Day – October 23, 2023
- National Motorcycle Ride Day – October 14, 2023
- National Mule Day – October 26, 2023
- National Mushroom Day – October 15, 2023
- National Name Your Car Day – October 2, 2023
- National Nanotechnology Day – October 9, 2023
- National No Beard Day – October 18, 2023
- National No Bra Day – October 13, 2023
- National Noodle Day – October 6, 2023
- National Nut Day – October 22, 2023
- National Oatmeal Day – October 29, 2023
- National Online Banking Day – October 9, 2023
- National Pasta Day – October 17, 2023
- National Personal Safety Day – October 7, 2023
- National Pet Obesity Awareness Day – October 11, 2023
- National Pets for Veterans Day – October 21, 2023
- National Pharmacy Buyer Day – October 20, 2023
- National Pharmacy Technician Day – October 17, 2023
- National Physician’s Assistant Day – October 6, 2023
- National Pickle Day – October 1, 2023
- National Pierogi Day – October 8, 2023
- National Pit Bull Awareness Day – October 28, 2023
- National Play Outside Day – October 7, 2023
- National Playing Card Collectors Day – October 17, 2023
- National Plus Size Appreciation Day – October 6, 2023
- National Poetry Day UK) – October 5, 2023
- National Potato Day – October 27, 2023
- National Pregnancy and Infant Loss Awareness Day – October 15, 2023
- National Prescription Drug Take Back Day – October 28, 2023
- National Pro-Life Cupcake Day – October 9, 2023
- National Publicist Day – October 30, 2023
- National Pug Day – October 15, 2023
- National Pumpkin Cheesecake Day – October 21, 2023
- National Pumpkin Seed Day – October 4, 2023
- National Research Maniacs Food Day – October 2, 2023
- National Riley Day – October 15, 2023
- National Roast Pheasant Day – October 15, 2023
- National Salmon Day – October 8, 2023
- National Sausage Pizza Day – October 11, 2023
- National Savings Day – October 12, 2023
- National Seafood Bisque Day – October 19, 2023
- National Shift 10 Day – October 10, 2023
- National Ship in a Bottle Day – October 4, 2023
- National Slap Your Irritating Co-Worker Day – October 23, 2023
- National Sneakers Day – October 9, 2023
- National Storytelling Day – October 5, 2023
- National Sunday School Teacher Appreciation Day – October 15, 2023
- National Suspenders Day – October 20, 2023
- National Taco Day – October 4, 2023
- National Take Your Parents to Lunch Day – October 11, 2023
- National Text Your Ex Day – October 30, 2023
- National Train Your Brain Day – October 13, 2023
- National Tuxedo Day – October 10, 2023
- National Vodka Day – October 4, 2023
- National Walk Your Dog Day – October 1, 2023
- National Yorkshire Pudding Day – October 13, 2023
- National Youth Conference Day – October 20, 2023
- Native American Day’sSouth Dakota) – October 9, 2023
- Nautilus Night Cephalopods) – October 9, 2023
- Naval Academy Day – October 10, 2023
- Navy Day – October 27, 2023
- Nevada Day – October 27, 2023
- New Friends Day – October 19, 2023
- Newspaper Comic Strip Appreciation Day – October 18, 2023
- Occupational Therapy Day – October 27, 2023
- Odd Socks Day – October 7, 2022
- Office Chocolate Day – October 20, 2023
- Old Farmers Day – October 12, 2023
- Own Business Day – October 10, 2023
- Paralegal Day – October 23, 2023
- Pay Back a Friend Day – October 17, 2023
- Peanuts Day Snoopy Cartoon) – October 2, 2023
- Phileas Fogg Wager Day – October 2, 2023
- Plaidurday – October 6, 2023
- Plush Animal Lovers Day – October 28, 2023
- Powers of Ten Day – October 10, 2023
- Pro-Life Day of Silent Solidarity – October 17, 2023
- Pudding Season Begins – October 1, 2023
- Pulled Pork Day – October 12, 2023
- Pumpkin Bread Day – October 30, 2023
- Pumpkin Day – October 26, 2023
- Punk For a Day Day – October 25, 2023
- Rainforest Day – October 19, 2023
- Random Acts of Poetry Day – October 4, 2023
- Read for the Record Day – October 29, 2023
- Record Store Day – October 24, 2023
- Recycle Your Mercury Thermostat Day – October 24, 2023
- Reformation Day – October 31, 2023
- Reformation Sunday – October 29, 2023
- Reptile Awareness Day – October 21, 2023
- Samhain – October 31, 2023
- Sandwich Day – October 3, 2023
- Save a Friend Day – October 31, 2023
- Scrubs Day – October 9, 2023
- Separation of Church and State Day – October 28, 2023
- Sewing Lovers Day – October 15, 2023
- Shine a Light Night – October 15, 2023
- Silly Sayings Day – October 13, 2023
- Smart is Cool Day – October 22, 2023
- Sourest Day – October 25, 2023
- Southern Food Heritage Day – October 11, 2023
- Spanish Language Day – October 12, 2023
- Speak Up For Service Day – October 30, 2023
- Spider-Man Day – October 14, 2023
- Spirit Day – October 19, 2023
- Spreadsheet Day – October 17, 2023
- Squid & Cuttlefish Day – October 10, 2023
- St. Crispin’s Day – October 25, 2023
- St. Francis of Assisi’s Feast Day – October 4, 2023
- St. Jude’s Day – October 28, 2023
- Statue of Liberty Dedication Day – October 28, 2023
- Stem Cell Awareness Day – October 11, 2023
- Steve Jobs Day – October 16, 2023
- Stop America’s Violence Everywhere – October 11, 2023
- Stop Bullying Day – October 11, 2023
- Submarine Hoagie Hero Grinder Day – October 9, 2023
- Sugar Addiction Awareness Day – October 30, 2023
- Support Your Local Chamber of Commerce – October 18, 2023
- Supreme Court Opening Day – October 2, 2023
- Swallows Depart from San Juan Capistrano Day – October 23, 2023
- Sweetest Day – October 21, 2023
- Sylvia Plath Day – October 27, 2023
- Take Back Your Time Day – October 24, 2023
- Team Margot Stem Cell and Bone Marrow Registration Day – October 7, 2023
- Techie’s Day – October 3, 2023
- Ten-Four Day – October 4, 2023
- Thank Your Cleaner Day – October 18, 2023
- The International Day of the Air Traffic Controller – October 20, 2023
- Treat Yo’ Self Day – October 13, 2023
- Trick or Treat for UNICEF Day – October 31, 2023
- TV Talk Show Host Day – October 23, 2023
- United Nations Day – October 24, 2023
- Unity Day – October 18, 2023
- Universal Music Day – October 14, 2023
- US Navy Birthday USN) – October 13, 2023
- Vegan Baking Day – October 1, 2023
- Vet Nurse Day – October 13, 2023
- Virus Appreciation Day – October 3, 2023
- Visit a Cemetery Day – October 29, 2023
- Walk a Mile in Her Shoes Day – October 7, 2023
- Walk to School Day – October 4, 2023
- Wear Purple for Domestic Violence Awareness Day – October 19, 2023
- Wear Something Gaudy Day – October 17, 2023
- White Cane Safety Day – October 15, 2023
- Wild Foods Day – October 28, 2023
- Willy Wonka Day – October 1, 2023
- Woofstock – October 7, 2023
- World Anesthesia Day – October 16, 2023
- World Animal Day – October 4, 2023
- World Arthritis Day – October 12, 2023
- World Audio Drama Day – October 30, 2023
- World Ballet Day – October 1, 2023
- World Card Making Day – October 7, 2023
- World Cerebral Palsy Day – October 6, 2023
- World Child Development Day – October 10, 2023
- World Cities Day – October 31, 2023
- World Communion Day – October 1, 2023
- World Day Against the Death Penalty – October 10, 2023
- World Day for Audiovisual Heritage – October 27, 2023
- World Day of Architecture – October 2, 2023
- World Day of Bullying Prevention – October 2, 2023
- World Development Information Day – October 24, 2023
- World Egg Day – October 13, 2023
- World Farm Animals Day – October 2, 2023
- World Food Day – October 16, 2023
- World Habitat Day – October 2, 2023
- World Homeless Day – October 10, 2023
- World Hospice and Palliative Care Day – October 10, 2023
- World Lemar Day – October 27, 2023
- World Menopause Day – October 18, 2023
- World Mental Health Day – October 10, 2023
- World Migratory Bird Day – October 14, 2023
- World No Alcohol Day – October 2, 2023
- World Octopus Day – October 8, 2023
- World Osteoporosis Day – October 20, 2023
- World Pasta Day – October 25, 2023
- World Pediatric Bone and Joint Day – October 19, 2023
- World Pet’s Day – October 4, 2023
- World Pizza Makers Day – October 25, 2023
- World Polio Day – October 24, 2023
- World Porridge Day – October 10, 2023
- World Post Day – October 9, 2023
- World Priest Day – October 28, 2023
- World Psoriasis Day – October 29, 2023
- World Savings Day – October 31, 2023
- World Sight Day – October 12, 2023
- World Smile Day – October 6, 2023
- World Spine Day – October 16, 2023
- World Standards Day – October 14, 2023
- World Statistics Day – October 20, 2023
- World Stroke Day – October 29, 2023
- World Student Day – October 20, 2023
- World Students’ Day – October 15, 2023
- World Teacher’s Day – October 5, 2023
- World Temperance Day – October 3, 2023
- World Thrombosis Day – October 13, 2023
- World Toy Camera Day – October 15, 2023
- World Trauma Day – October 17, 2023
- World Tripe Day – October 24, 2023
- World Vegetarian Day – October 1, 2023
- You Go Girl Day – October 11, 2023
- You Matter to Me Day – October 7, 2023