| September Monthly Observances |
|
| Attention Deficit Hyperactivity Disorder Month |
| Baby Safety Month |
| Backpack Safety America Month |
| Be Kind To Editors & Writers Month |
| College Savings Month |
| Go Wild During California Wild Rice Month |
| Great American Low-Cholesterol, Low-fat Pizza Bake Month |
| Gynecology Cancer Awareness Month |
| International People Skills Month |
| International Self-Awareness Month |
| International Strategic Thinking Month |
| Library Card Sign-up Month |
| (World) Leukemia and Lymphoma Awareness Month |
| Metaphysical Awareness Month |
| National Alcohol & Drug Addiction Recovery Month |
| Menopause Awareness Month |
| Million Minute Family Challenge (Sept.-Dec.) |
| Mold Awareness Month |
| National Chicken Month |
| National Childhood Injury Prevention Month |
| National Coupon Month |
| National Honey Month |
| National Mushroom Month |
| National Organic Harvest Month |
| National Osteopathic Medicine Month |
| National Ovarian Cancer Awareness Month (Gov't) |
| National Sickle Cell Month |
| Ovarian Cancer Awareness Month (ovarian.org) |
| National Pediculosis Prevention Month |
| National Piano Month |
| National Potato Month |
| National Preparedness Month |
| National Rice Month |
| National Skin Care Awareness Month |
| One-on-One Month |
| Pediatric Cancer Awareness Month |
| Pleasure Your Mate Month |
| Reunion Planning Month |
| Sea Cadet Month |
| September Is Healthy Aging Month |
| Shameless Promotion Month |
| Sports and Home Eye Health & Safety Month |
| Subliminal Communications Month |
| Update Your Resume Month |
| World Animal Remembrance Month |
| National Hispanic Heritage Month (September 15-October 15) |
|
| September Weekly Observances |
|
|
| National Childhood Injury Prevention Week: 1-7 |
| National Payroll Week: 1-5 |
| National Waffle Week: 1-5 |
| Self-University Week: 1-7 |
| National Assisted Living Week: 7-13 |
| National Historically Black Colleges & Universities Week: 7-13 |
| Suicide Prevention Week: 7-13 |
| Line Dance Week: 8-13 |
| National Invisible Chronic Illness Awareness: 8-14 |
| National Constitution Center Constitution Week: 11-18 |
| Balance Awareness Week: 14-20 |
| Substitute Teacher Appreciation Week: 14-20 |
| Constitution Week: 17-25 |
| International Women's Ecommerce Days: 18-21 |
| Build A Better Image Week: 21-27 |
| Christian Leadership Week: 21-27 |
| Deaf Awareness Week: 21-27 |
| National Adult Immunization Awareness Week: 21-27 |
| National Clean Hands Week: 21-27 |
| National Farm & Ranch Safety and Health Week: 21-27 |
| National Keep Kids Creative Week: 21-27 |
| National Love Your Files Week: 21-27 |
| Prostate Cancer Awareness Week: 21-27 |
| National Rehabilitation Awareness Celebration: 21-27 |
| National Singles Week: 21-27 |
| Tolkien Week: 21-27 |
| Banned Books Week - Celebrating the Freedom to Read: 27-10/4 |
| National Chimney Safety Week: 28-10/4 |
| Remember to Register to Vote Week: 28-10/4 |
| World Dairy Week: 30-10/4 |
|
| September Daily Observances |
|
|
|
|
| Building and Code Staff Appreciation Day: 1 |
| Chicken Boy's Day: 1 |
| Emma M. Nutt Day: 1 |
| Labor Day: 1 |
| Republican Convention: 1-4 |
| Ramadan: 2-30 |
| V-J Day: 2 |
| Newspaper Carrier Day: 4 |
| Be Late For Something Day: 5 |
| Google Commemoration Day: 7 |
| Grandma Moses Day: 7 |
| National Grandparent's Day: 7 |
| "Neither Snow nor Rain" Day: 7 |
| Salami Day: 7 |
| International Literacy Day: 8 |
| National Boss/Employee Exchange Day: 8 |
| Wonderful Weirdoes Day: 9 |
| Swap Ideas Day: 10 |
| Libraries Remember Day: 11 |
| Patriot Day: 11 |
| Remembrance Day: 11 |
| Remember Freedom Day: 11 |
| (World) Suicide Prevention Day: 12 |
| Video Games Day: 12 |
| Bald is Beautiful Day: 13 |
| International Chocolate Day: 13 |
| International Sing-Out Day: 15 |
| National Women Road Warrior Day: 15 |
| Anne Bradstreet Day: 16 |
| Hurricane Katrina National Day of Prayer and Remembrance: 16 |
| International Day for the Preservation of the Ozone Layer: 16 |
| Opening General Assembly of the UN: 16 |
| Trail of Tears Commemoration Day: 16 |
| Citizenship Day: 17 |
| Constitution Day: 17 |
| Pledge Across America Day: 17 |
| VFW Ladies Auxilliary Day: 17 |
| Air Force Birthday: 18 |
| National POW/MIA Recognition Day: 19 |
| Talk Like A Pirate Day: 19 |
| Big Whopper Liar Day: 20 |
| America's Day for Kids: 20 |
| International Eat An Apple Day: 20 |
| International Coastal Cleanup Day: 20 |
| Responsible Dog Ownership Day: 20 |
| Wife Appreciation Day: 20 |
| International Day of Peace: 21 |
| Women's Friendship Day: 21 |
| World's Alzheimer's Day: 21 |
| American Business Women's Day: 22 |
| Dear Diary Day: 22 |
| Elephant Appreciation Day: 22 |
| Family Day or Family Table Day: 22 |
| Hobbit Day: 22 |
| National White Chocolate Day: 22 |
| Innergize Day: 23 |
| National Women's Health & Fitness Day: 24 |
| Punctuation Day: 24 |
| Schwenkfelder Thanksgiving: 24 |
| (World) Ataxia Awareness Day: 25 |
| National One-Hit Wonder Day: 25 |
| World Maritime Day: 25 |
| Dog Scouts of America: 26 |
| Love Note Day: 26 |
| Shamu the Whale Day: 26 |
| National Public Lands Day: 27 |
| R.E.A.D. in America Day: 27 |
| Ancestor Appreciation Day: 27 |
| Family Health and Fitness Day USA: 27 |
| Kiwanis Kids' Day: 27 |
| National Hunting and Fishing Day: 27 |
| World Tourism Day: 27 |
| Fish Tank Floorshow Night: 28 |
| Gold Star Mother's Day: 28 |
| National Good Neighbor Day: 28 |
| World Heart Day: 28 |
| Michaelmas: 29 |
| Rosh Hashanah: 29 |
| VFW Day: 29 |
