On Sept. 14, McDonald’s announced that it is celebrating National Cheeseburger Day on Sept. 18 by selling its Double Cheeseburger at less than half its usual price: 50 cents, to be precise.

On Dec. 16, McDonald’s announced on its website that it’s selling its Double Cheeseburger for only 50 cents on Monday, Dec. 16. This deal is only redeemable once in the McDonald’s app.

So, of course, there's a National Cheeseburger ... can select the "National Cheeseburger Day" option from the online menu to redeem the offer. Dairy Queen free double Original Cheeseburger ...

and for National Cheeseburger Day, the company is offering a pretty deep discount. Customers can grab a McDonald’s double cheeseburger for only 50 cents for one day only. Your lunch or dinner ...

To take advantage of the 50-cent double cheeseburger deal for National Cheeseburger Day, you must first download the McDonald's app. The products and services mentioned below were selected ...