| Birthday of Crown Prince Tupouto'a-'Ulukalala | |  |
| National Hero Day | | |
| International Country Music Day | | |
| Day of Melilla | | |
| National Apple Dumpling Day | | |
| National Monte Cristo Day | | |
| National IT Professionals Day | | |
| Teachers' Day | | |
| Constitution Day and Citizenship Day | | |
| Mid-Autumn Festival | | |
| Chuseok | | |
| Day After Prophet's Birthday | | |
| National Table Shuffleboard Day | | |
| World Patient Safety Day | | |
| Get Ready Day | | |
| National Day | | |
| Rice Krispie Treat Day | | |
| National Cheeseburger Day | | |
| Air Force Birthday | | |
| National HIV/AIDS and Aging Awareness Day | | |
| Day after Mid-Autumn Festival | | |
| Chuseok Holiday | | |
| Read An Ebook Day | | |
| International Equal Pay Day | | |
| National First Love Day | | |
| World Water Monitoring Day | | |
| National Respect Day | | |
| Independence Day | | |
| The Feast of Saint Januarius (Naples) | | |
| Army Day | | |
| National Gymnastics Day | | |
| International Talk Like a Pirate Day | | |
| National Butterscotch Pudding Day | | |
| National Woman Road Warrior Day | | |
| German World Childrens' Day | | |
| National Fried Rice Day | | |
| National Pepperoni Pizza Day | | |
| National Punch Day | | |
| National String Cheese Day | | |
| National Tradesmen Day | | |
| National POW/MIA Recognition Day | | |
| National Day Holiday | | |
| International Grenache Day | | |
| National Queso Day | | |
| 4 PM Finish Day | | |
| National Concussion Awareness Day | | |
| Independence Day | | |
| International Day of Peace | | |
| Miniature Golf Day | | |
| National Chai Day | | |
| National Pecan Cookie Day | | |
| Big Whopper Liar Day | | |
| Boys’ and Girls’ Club Day for Kids | | |
| Puppy Mill Awareness Day | | |
| Responsible Dog Ownership Day | | |
| National Singles Day | | |
| National CleanUp Day | | |
| National Dance Day | | |
| Valentine's Day | | |
| Birthday of Prophet Muhammad and Imam Sadeq | | |
| Founder's Day | | |
| European Heritage Days | | |
| Batman Day | | |
| International Red Panda Day | | |
| World Gratitude Day | | |
| International Eat An Apple Day | | |
| World Alzheimer’s Day | | |
| International Coastal Cleanup Day | | |
| Escapology Day | | |
| Locate An Old Friend Day | | |
| Independence Day | | |
| American Business Women’s Day | | |
| Car Free Day | | |
| National Centenarian’s Day | | |
| Elephant Appreciation Day | | |
| National Girls’ Night In Day | | |
| Hobbit Day | | |
| National Ice Cream Cone Day | | |
| National Legwear Day | | |
| National White Chocolate Day | | |
| September Equinox | | |
| Emancipation Day | | |
| Saint Mauritius' Day | | |
| Mabon | | |
| Chainmail Day | | |
| World Rhino Day | | |
| Dear Diary Day | | |
| Saudi National Day | | |
| Checkers Day | | |
| Celebrate Bisexuality Day | | |
| National Great American Pot Pie Day | | |
| National Snack Stick Day | | |
| National Teal Talk Day | | |
| September Equinox | | |
| South Canterbury Anniversary Day | | |
| September Equinox observed | | |
| Founder's Day observed | | |
| Redhead Appreciation Day | | |
| National Family Day | | |
| Education Technology Day | | |
| Restless Legs Awareness Day | | |
| Za’atar Day | | |
| International Week Of Happiness At Work | | |
| International Day Of Sign Languages | | |
