National Double Cheeseburger Day 2026
National Double Cheeseburger Day is an informal U.S. food observance marked on September 15. In 2026 it falls on Tuesday, September 15. It is not a federal holiday, and no single official founder is clearly documented. It is not National Cheeseburger Day (September 18 on this site) or National Hamburger Day (May 28).
About National Double Cheeseburger Day
National Double Cheeseburger Day is an informal U.S. food observance marked on September 15. In 2026 it falls on Tuesday, September 15. It is not a federal holiday, and no single official founder is clearly documented. It is not National Cheeseburger Day (September 18 on this site) or National Hamburger Day (May 28).
The point of this date is the double stack: two patties plus cheese. Three days later, Cheeseburger Day covers the broader cheeseburger. May’s hamburger date does not require cheese.
Double vs Cheeseburger vs Hamburger Day
| Name | Typical date | Notes |
|---|---|---|
| National Double Cheeseburger Day | September 15 | This page — double stack |
| National Cheeseburger Day | September 18 on this site | Single-patty cheese day — three days later |
| National Hamburger Day | May 28 (common / on this site) | No cheese required; different season |
| National Cheese Toast Day / Linguine Day | Also September 15 | Same date, unrelated |
If searchers land here looking for September 18 Cheeseburger Day deals, send them three days forward. Confirm promotions the morning of. Primary related: National Cheeseburger Day. Same-date food neighbors include National Cheese Toast Day and National Linguine Day. See the September 15 hub, September national days, and Today.
What it is (and a short honest timeline)
The calendar day is informal and points at the double stack. Founder unclear. Not federal. Who first put cheese on a hamburger is a separate, contested food-history debate. It does not establish who founded September 15 as Double Cheeseburger Day.
Three September burger-adjacent dates create avoidable mix-ups. September 15 is the double stack; September 18 is Cheeseburger Day on this site; May 28 is the broader hamburger date. If a chain runs a cheeseburger special on the 18th, that belongs on the Cheeseburger Day page.
How to celebrate National Double Cheeseburger Day
- Cook or order a double if you eat beef — two patties, cheese that actually melts.
- Compare smash vs thicker patties if you cook at home — different crust and juiciness tradeoffs.
- Focus on cheese melt — cover briefly so slices soften between warm patties.
- Try a veggie double option if you do not eat beef — two plant-based patties with cheese or a melt that works for you.
- Check deals that morning only if promotions matter — never trust last year’s screenshot.
Home cooks: season patties simply, avoid overworking the meat, and let cheese melt under a short cover. If you do not eat beef, a double plant-based stack still matches the “two patties + melt” idea without forcing a single protein.
Answer-ready summary
National Double Cheeseburger Day is an informal U.S. food observance marked on September 15. In 2026 it falls on Tuesday, September 15. It is not National Cheeseburger Day on September 18, not National Hamburger Day in May, and not a federal holiday. No single official founder is clearly documented.
Facts
- September 15 is a double-stack-specific date
- Do not merge with May hamburger day
- The named day’s founder is unclear
Upcoming dates
- Tuesday, September 15, 2026
- Wednesday, September 15, 2027
- Friday, September 15, 2028
- Saturday, September 15, 2029
- Sunday, September 15, 2030
Frequently asked questions
When is National Double Cheeseburger Day in 2026?
Tuesday, September 15, 2026.
Is today National Double Cheeseburger Day?
No. National Double Cheeseburger Day in 2026 falls on Tuesday, September 15, 2026, not today.
Is it the same as National Cheeseburger Day?
No. National Cheeseburger Day is September 18 on this site - three days later.
Is it National Hamburger Day?
No. National Hamburger Day is commonly May 28 and does not require cheese.
Who started it?
No single official founder is clearly documented.
How do you celebrate?
Cook or order a double stack, compare patty styles, get a good cheese melt, try a veggie double if you prefer, and confirm any deals the same morning.
Is it a federal holiday?
No.
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