Holidays for Sunday, October 31st, 2027
Observed the second day after the eighth new moon following Naw-Rúz
Also known as All Hallows' Eve, Calan Gaeaf, Feast of Apples, Feast of Souls, Feast of the Dead, Hallowe'en, Hallowmas, and November Eve
Observed annually on October 31st
Observed annually on October 31st
Observed annually on October 31st
Multi-day Events Continuing on Sunday, October 31st, 2027
- "Cut Out Dissection" MonthObserved the month of October
- ADHD Awareness MonthObserved the month of October
- Adopt-A-Dog MonthObserved the month of October
- AIDS Awareness MonthObserved the month of December and the month of October
- American Pharmacists MonthObserved the month of October
- Antidepressant Death Awareness MonthObserved the month of October
- Bat Appreciation MonthObserved the month of October
- Black Cat Awareness MonthObserved the month of October
- Blindness Awareness MonthObserved the month of October
- Breast Cancer Awareness MonthObserved the month of October
- Caffeine Addiction Recovery MonthObserved the month of October
- Celebrate Sun Dried Tomatoes MonthObserved the month of October
- Celebrating the Bilingual Child MonthObserved the month of October
- Child Health MonthObserved the month of October
- Children's Magazine MonthObserved the month of October
- Church Library MonthObserved the month of October
- Church Safety and Security MonthObserved the month of October
- Class Reunion MonthObserved the month of October
- Co-op MonthObserved the month of October
- Computer Learning MonthObserved the month of October
- Country Music MonthObserved the month of October
- Crime Prevention MonthObserved the month of October
- Dysautonomia Awareness MonthObserved the month of October
- Eat Better, Eat Together MonthObserved the month of October
- Eat Country Ham MonthObserved the month of October
- Emotional Intelligence Awareness MonthObserved the month of October
- Emotional Wellness MonthObserved the month of October
- Employee Ownership MonthObserved the month of October
- Energy Management is a Family Affair - Improve Your Home MonthObserved the month of October
- Eye Injury Prevention MonthObserved the month of October
- Fair Trade MonthObserved the month of October
- Fall Car Care MonthObserved the month of October
- Family History MonthObserved the month of October
- Financial Planning MonthObserved the month of October
- Fire Prevention MonthObserved the month of October
- German-American Heritage MonthObserved the month of October
- Global Diversity Awareness MonthObserved the month of October
- Go Nuts over Texas Peanuts MonthObserved the month of October
- Gourmet Adventures MonthObserved the month of October
- Halloween Safety MonthObserved the month of October
- Head Start Awareness MonthObserved the month of October
- Health Literacy MonthObserved the month of October
- Healthy Lung MonthObserved the month of October
- Hog Out MonthObserved the month of October
- Home Eye Safety MonthObserved the month of October
- I'm Just Me Because MonthObserved the month of October
- International Augmentative & Alternative Communication Awareness MonthObserved the month of October
- International Starman MonthObserved the month of October
- International Strategic Planning MonthObserved the month of October
- International Walk To School MonthObserved the month of October
- Italian-American Heritage MonthObserved the month of October
- LGBT History MonthObserved the month of October
- Long-Term Care Planning MonthObserved the month of October
- Lupus Awareness Month (UK)Observed the month of October
- Month of FreethoughtObserved the month of October
- National "Gain the Inside Advantage" MonthObserved the month of October
- National Animal Safety and Protection MonthObserved the month of October
- National Applejack MonthObserved the month of October
- National Apple MonthObserved the month of October
- National Arts and Humanities MonthObserved the month of October
- National Bake and Decorate MonthObserved the month of October
- National Book MonthObserved the month of October
- National Bullying Prevention MonthObserved the month of October
- National Caramel MonthObserved the month of October
- National Chili MonthObserved the month of October
- National Chiropractic Health MonthObserved the month of October
- National Cookbook MonthObserved the month of October
- National Cookie MonthObserved the month of October
- National Critical Illness Awareness MonthObserved the month of October
- National Cryptocurrency MonthObserved the month of October
- National Cyber Security Awareness MonthObserved the month of October
- National Dental Hygiene MonthObserved the month of October
- National Depression Education and Awareness MonthObserved the month of October
- National Dessert MonthObserved the month of October
- National Disability Employment Awareness MonthObserved the month of October
- National Domestic Violence Awareness MonthObserved the month of October
- National Down Syndrome Awareness MonthObserved the month of October
- National Dropout Prevention MonthObserved the month of October
- National Dyslexia Awareness MonthObserved the month of October
- National Economic Education MonthObserved the month of October
- National Energy Action MonthObserved the month of October
- National Ergonomics MonthObserved the month of October
- National Family Sexuality Education MonthObserved the month of October
- National Farm to School MonthObserved the month of October
- National Go on a Field Trip MonthObserved the month of October
- National Kitchen & Bath MonthObserved the month of October
- National Learning and Development MonthObserved the month of October
- National Liver Awareness MonthObserved the month of October
- National Medical Librarians MonthObserved the month of October
- National Orthodontic Health MonthObserved the month of October
- National Pasta MonthObserved the month of October
- National Pet CBD MonthObserved the month of October
- National Pet Wellness MonthObserved the month of October
- National Physical Therapy MonthObserved the month of October
- National Pickled Peppers MonthObserved the month of October
- National Pizza MonthObserved the month of October
- National Popcorn Poppin' MonthObserved the month of October
- National Pork MonthObserved the month of October
- National Pregnancy and Infant Loss Awareness MonthObserved the month of October
- National Pretzel MonthObserved the month of October
- National Protect Your Hearing MonthObserved the month of October
- National Reading Group MonthObserved the month of October
- National Roller Skating MonthObserved the month of October
- National RSV Awareness MonthObserved the month of October
- National Sarcastic Awareness MonthObserved the month of October
- National Sausage MonthObserved the month of October
- National Seafood MonthObserved the month of October
- National Sensory Awareness MonthObserved the month of October
- National Spina Bifida Awareness MonthObserved the month of October
- National Squirrel Awareness MonthObserved the month of October
- National Stamp Collecting MonthObserved the month of October
- National Sudden Cardiac Arrest Awareness MonthObserved the month of October
- National Toilet Tank Repair MonthObserved the month of October
- National Window Covering Safety MonthObserved the month of October
- National Work and Family MonthObserved the month of October
- Organize Your Medical Information MonthObserved the month of October
- Pastor Appreciation MonthObserved the month of October
- Pear & Pineapple MonthObserved the month of October
- Photographer Appreciation MonthObserved the month of October
- Polish American Heritage MonthObserved the month of October
- Positive Attitude MonthObserved the month of October
- Raptor MonthObserved the month of October
- Rett Syndrome Awareness MonthObserved the month of October
- Rhizomes and Persimmons MonthObserved the month of October
- Rhubarb MonthObserved the month of October
- Right Brainers Rule! MonthObserved the month of October
- Self-Promotion MonthObserved the month of October
- Spinach Lovers MonthObserved the month of October
- Subaru Loves Pets MonthObserved the month of October
- Sudden Infant Death Syndrome Awareness MonthObserved the month of October
- Tackling Hunger MonthObserved the month of October
- Talk About Your Medicines MonthObserved the month of October
- Workplace Politics Awareness MonthObserved the month of October
- World Menopause MonthObserved the month of October
- National Vegetarian Awareness MonthObserved annually for 32 days starting on October 1st
- Wishbones for Pets MonthObserved annually for 47 days starting on October 15th
- Decade of Action for Road SafetyObserved January 1st, 2021 through December 31st, 2030
- International Decade for the Eradication of ColonialismObserved January 1st, 2021 through December 31st, 2030
- International Decade of Indigenous LanguagesObserved January 1st, 2022 through December 31st, 2031
- United Nations Decade for the Eradication of PovertyObserved January 1st, 2018 through December 31st, 2027
- United Nations Decade of Healthy AgeingObserved January 1st, 2021 through December 31st, 2030
- United Nations Decade of Ocean Science for Sustainable DevelopmentObserved January 1st, 2021 through December 31st, 2030
- United Nations Decade on Ecosystem RestorationObserved January 1st, 2021 through December 31st, 2030
- International Decade of Sciences for Sustainable DevelopmentObserved January 1st, 2024 through December 31st, 2033
- Nelson Mandela Decade of PeaceObserved January 1st, 2019 through December 31st, 2028
- United Nations Decade of Family FarmingObserved January 1st, 2019 through December 31st, 2028
- International Decade for Action "Water for Sustainable Development"Observed March 22nd, 2018 through March 22nd, 2028