McDonald’s is offering a major discount in honor of National Cheeseburger Day on Sept. 18.

On Thursday, customers can purchase a Double Cheeseburger for just $0.50 through the McDonald’s app. Please note that this deal is only available through the app and is limited to one Double Cheeseburger per person.

This announcement comes days after the chain announced its Extra Value meals on Sept. 8.

These limited-time meals include the $8 Big Mac meal, which consists of a Big Mac, medium fries, and a medium soft drink. There is also the $5 Sausage McMuffin with Egg meal, which includes a Sausage McMuffin with egg, hash browns, and a small coffee. These meal combinations are estimated to save customers 15% in savings compared to if they bought each item individually.

Other menu items, such as

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