Complete List of September Holidays and Observances

September signals the official start of fall, but there’s much more to the month than cooler weather and back-to-school routines. It’s also filled with meaningful holidays and observances such as Labor Day, Patriot Day, and the kickoff of Hispanic Heritage Month.

Alongside the important dates, September sprinkles in plenty of fun, quirky celebrations. Craving a pizza night? Mark your calendar for National Cheese Pizza Day and National Pepperoni Pizza Day. Thinking about leaving the car in the driveway? World Car-Free Day on September 22 is a great excuse to pedal around town instead. And for podcast lovers, International Podcast Day on September 30 is the perfect time to binge your favorite shows—or discover new ones.

No matter your interests, September offers something worth celebrating almost every day of the month.

September 1, 2025 (Monday)

• Labor Day (Federal Holiday) – Honors American workers and the labor movement.
• National Cherry Popover Day
• Emma M. Nutt Day (celebrating the first female telephone operator)

September 2, 2025 (Tuesday)

• National Blueberry Popsicle Day
• World Coconut Day

September 3, 2025 (Wednesday)

• National Skyscraper Day
• U.S. Bowling League Day
• National Welsh Rarebit Day

September 4, 2025 (Thursday)

• National Wildlife Day
• National Macadamia Nut Day
• Newspaper Carrier Day

September 5, 2025 (Friday)

• National Cheese Pizza Day
• International Day of Charity
• National Be Late for Something Day

September 6, 2025 (Saturday)

• National Read a Book Day
• Fight Procrastination Day
• National Coffee Ice Cream Day

September 7, 2025 (Sunday)

• National Grandparents Day
• National Salami Day
• National Beer Lovers Day

September 8, 2025 (Monday)

• International Literacy Day
• National Ampersand Day
• National Hug Your Hound Day

September 9, 2025 (Tuesday)

• National Teddy Bear Day
• Wonderful Weirdos Day
• National Wiener Schnitzel Day

September 10, 2025 (Wednesday)

• World Suicide Prevention Day
• National Swap Ideas Day
• National TV Dinner Day

September 11, 2025 (Thursday)

• Patriot Day & National Day of Service and Remembrance
• National Make Your Bed Day
• National Hot Cross Bun Day

September 12, 2025 (Friday)

• National Video Games Day
• National Chocolate Milkshake Day
• National Day of Encouragement

September 13, 2025 (Saturday)

• National Peanut Day
• National Kids Take Over the Kitchen Day
• Uncle Sam Day
• National Bald is Beautiful Day

September 14, 2025 (Sunday)

• National Coloring Day
• National Cream-Filled Donut Day
• National Eat a Hoagie Day

September 15, 2025 (Monday)

• Hispanic Heritage Month Begins
• International Day of Democracy
• National Linguine Day
• National Double Cheeseburger Day
• National Felt Hat Day

September 16, 2025 (Tuesday)

• Mexican Independence Day
• National Guacamole Day
• National Play-Doh Day
• National Cinnamon Raisin Bread Day

September 17, 2025 (Wednesday)

• Constitution Day (Citizenship Day)
• National Apple Dumpling Day
• National Monte Cristo Day

September 18, 2025 (Thursday)

• National Cheeseburger Day
• Air Force Birthday
• National HIV/AIDS and Aging Awareness Day

September 19, 2025 (Friday)

• POW/MIA Recognition Day
• International Talk Like a Pirate Day
• National Butterscotch Pudding Day

September 20, 2025 (Saturday)

• National Pepperoni Pizza Day
• National String Cheese Day
• National Punch Day

September 21, 2025 (Sunday)

• International Day of Peace
• World Alzheimer’s Day
• National Pecan Cookie Day

September 22, 2025 (Monday)

• Autumn Equinox (First Day of Fall)
• World Car-Free Day
• National Ice Cream Cone Day
• National Centenarian’s Day
• American Business Women’s Day

September 23, 2025 (Tuesday)

• National Voter Registration Day
• National Dogs in Politics Day (Checkers Day)
• National Snack Stick Day
• Restless Legs Awareness Day

September 24, 2025 (Wednesday)

• National Punctuation Day
• National Cherries Jubilee Day
• National Women’s Health & Fitness Day

September 25, 2025 (Thursday)

• National Comic Book Day
• National Lobster Day
• National One-Hit Wonder Day

September 26, 2025 (Friday)

• Native American Day (California & Nevada)
• National Pancake Day
• National Johnny Appleseed Day
• National Situational Awareness Day

September 27, 2025 (Saturday)

• National Family Day
• National Chocolate Milk Day
• National Scarf Day
• World Tourism Day

September 28, 2025 (Sunday)

• National Good Neighbor Day
• National Strawberry Cream Pie Day
• National Drink Beer Day

September 29, 2025 (Monday)

• National Coffee Day
• World Heart Day
• National Biscotti Day

September 30, 2025 (Tuesday)

• International Podcast Day
• National Love People Day
• National Chewing Gum Day
• National Hot Mulled Cider Day