Major Holidays in September 2023

The only U.S. federal holiday in September 2023 is Labor Day on Monday, September 4. Some schools and places of business may be closed for Rosh Hashanah. This two-day Jewish New Year celebration begins on Friday, September 15, or for the holiest day of the Jewish calendar, Yom Kippur, on Sunday, September 24. On September 26 and 27, Muslims worldwide celebrate Mawlid, the birthday of the Islamic Prophet Muhammad.

Another noteworthy date is the autumnal equinox, on September 23, when the sun is exactly above the equator and day and night are of equal length. September 15 also kicks off National Hispanic Heritage Month.

• Sept. 1: Emma M. Nutt Day, National Cherry Popover Day, National College Colors Day* (Friday before Labor Day), National Lazy Mom's Day* (first Friday), National Food Bank Day* (first Friday)
• Sept. 2: Victory Over Japan (V-J) Day, World Coconut Day, National Tailgating Day* (first Saturday), World Beard Day* (first Saturday)
• Sept. 3: Skyscraper Day, National Bowling League Day
• Sept. 4: Labor Day* (first Monday), National Wildlife Day, National Macadamia Nut Day, Eat an Extra Dessert Day
• Sept. 5: Be Late for Something Day, National Cheese Pizza Day
• Sept. 6: National Coffee Ice Cream Day, Fight Procrastination Day, National Read a Book Day
• Sept. 7: National Salami Day, Neither Rain Nor Snow Day, National Beer Lover's Day, National Grandma Moses Day
• Sept. 8: International Literacy Day, National Ampersand Day, Pardon Day
• Sept. 9: Wonderful Weirdos Day, National Teddy Bear Day
• Sept. 10: National Swap Ideas Day, National Grandparents Day* (first Sunday after Labor Day), National Pet Memorial Day* (second Sunday)
• Sept. 11: Patriot Day (9/11 Remembrance), National Make Your Bed Day, National Boss/Employee Exchange Day* (Monday following Labor Day)
• Sept. 12: National Video Games Day, National Chocolate Milkshake Day, National Day of Encouragement
• Sept. 13: Roald Dahl Day, Defy Superstition Day, Uncle Sam Day, Positive Thinking Day, National Peanut Day, National Kids Take Over the Kitchen Day, National Bald Is Beautiful Day, National Celiac Disease Awareness Day
• Sept. 14: National Cream-Filled Donut Day, National Live Creative Day, National Sober Day, Eat a Hoagie Day
• Sept. 15: Make a Hat Day, Greenpeace Day, National Online Learning Day, National Double Cheeseburger Day, National POW/MIA Recognition Day* (third Friday)

• Sept. 16: The American Legion Day, Mexican Independence Day, Mayflower Day, National Play-Doh Day, National Step Family Day, National Working Parents Day, Collect Rocks Day, National Guacamole Day, National Dance Day* (third Saturday), International Red Panda Day* (third Saturday), National Gymnastics Day* (third Saturday), National CleanUp Day* (third Saturday)
• Sept. 17: Constitution Day, Citizenship Day, National Apple Dumpling Day, National Monte Cristo Day, National Women's Friendship Day* (third Sunday), Wife Appreciation Day* (third Sunday)
  • Sept. 18: The U.S. Air Force Birthday, National HIV/AIDS and Aging Awareness Day, National Cheeseburger Day, Rice Krispies Treats Day
  • Sept. 19: International Talk Like a PirateDay, National Butterscotch Pudding Day, National IT Professionals Day* (third Tuesday)
  • Sept. 20: National Pepperoni Pizza Day, National String Cheese Day
  • Sept. 21: International Day of Peace, World Gratitude Day, Miniature Golf Day
  • Sept. 22: Hobbit Day, Dear Diary Day, Elephant Appreciation Day, American Business Women's Day, World Car-Free Day, National Ice Cream Cone Day, National Centenarian's Day, National White Chocolate Day, Native American Day* (fourth Friday in California/Nevada), National BRAVE Day* (fourth Friday)
  • Sept. 23: Autumnal Equinox Day, National Checkers Day, National Great American Pot Pie Day, International Rabbit Day* (fourth Saturday), National Public Lands Day* (fourth Saturday)
  • Sept. 24: National Punctuation Day, National Cherries Jubilee Day, National Gold Star Mother's and Family Day* (last Sunday), International Daughters Day* (fourth Sunday)
  • Sept. 25: Math Storytelling Day, National Comic Book Day, National Cooking Day, National Family Day* (fourth Monday)
  • Sept. 26: Johnny Appleseed Day, National Dumpling Day, National Pancake Day, Love Note Day, National Voter Registration Day* (fourth Tuesday)
  • • Sept. 27: National Crush a Can Day, National Chocolate Milk Day, National Women's Health and Fitness Day* (last Wednesday)
    • Sept. 28: National Good Neighbor Day
    • Sept. 29: National Veterans of Foreign Wars Day, Confucius Day, National Coffee Day
    • Sept. 30: National Love People Day, National Chewing Gum Day, National Hot Mulled Cider Day, National Ghost Hunting Day* (last Saturday)
• The International Day of Peace, the autumnal equinox, and the Jewish holidays are recognized worldwide in September. In 2023, Mawlid, an Islamic holiday, starts on September 26 and is celebrated globally. Other international observances include International Literacy Day on September 8 and International Week of the Deaf, celebrated during the last whole week of September (Monday through Sunday)