National Cheeseburger Day 2026
food drinkFriday, September 18, 2026
3 days from today · next occurrence
About National Cheeseburger Day
National Cheeseburger Day is a lighthearted American food holiday devoted to the sandwich that needs no introduction: a beef patty, melted cheese, and a soft bun, plus whatever toppings your heart demands. It lands in mid-September, right when grill weather and back-to-school routines overlap, giving everyone an official excuse to fire up the barbecue or drive to a favorite burger joint.
The cheeseburger itself has contested origins, with California, Colorado, Kentucky, and other states all claiming the first slice of cheese melted onto a hamburger in the 1920s and 1930s. What is certain is that the combination became an instant classic, eventually spawning an entire industry of diners, drive-ins, and fast-food chains built around it.
Today the day is marked by restaurants across the country offering deals, free burgers, or limited-time creations. Home cooks join in too, stacking patties with cheddar, Swiss, blue cheese, or several slices at once. However you celebrate, the rules are simple: beef optional, cheese negotiable, napkins mandatory.
When is National Cheeseburger Day?
| Year | Date | Weekday |
|---|---|---|
| 2026 | September 18, 2026 | Friday |
| 2027 | September 18, 2027 | Saturday |
| 2028 | September 18, 2028 | Monday |
| 2029 | September 18, 2029 | Tuesday |
| 2030 | September 18, 2030 | Wednesday |
History of National Cheeseburger Day
The cheeseburger's origin story is a friendly mess of rival claims. Lionel Sternberger of Pasadena, California is often credited with dropping a slice of American cheese onto a burger at his father's sandwich stand around 1924, while Louisville's Kaelin's Restaurant and a Denver eatery called the Humpty Dumpty Bar both tell their own founding tales from the same era. What followed was decades of steady conquest: White Castle normalized the hamburger, McDonald's and Burger King industrialized it, and cheese became the default upgrade on menus everywhere. Food holiday calendars added the cheeseburger to September sometime in the 2010s, and the date stuck as an annual marketing bonanza for burger chains and an annual indulgence for everyone else.
How to Celebrate National Cheeseburger Day
- Grill or pan-fry cheeseburgers at home and let everyone choose their own cheese.
- Check local burger spots for September 18 deals, freebies, or limited editions.
- Try a regional style like a green chile cheeseburger or a patty melt.
- Host a topping bar with pickles, jalapeños, fried onions, and sauces.
- Pair the meal with fries and a milkshake for the full diner experience.
Frequently Asked Questions
- When is National Cheeseburger Day?
- National Cheeseburger Day arrives every year on September 18, in the middle of the late-season grilling stretch.
- Is National Cheeseburger Day a public holiday?
- No, it is not a public holiday. It is a fun food observance, so banks, schools, and government offices stay open, though plenty of burger restaurants run promotions for the occasion.
- How do people celebrate National Cheeseburger Day?
- People celebrate by grilling at home, sampling new cheese varieties, and taking advantage of restaurant deals and giveaways on September 18.
- Who invented the cheeseburger?
- No single inventor is universally accepted. A teenage cook in Pasadena and restaurants in Louisville and Denver all have claims dating to the 1920s and 1930s.