Report: McDonald’s Offers 50-Cent Double Cheeseburger for National Cheeseburger Day Celebrating National Cheeseburger Day On September 18th, McDonald’s will be joining in the celebration of National Cheeseburger Day by offering its famous Double Cheeseburger for the incredibly low price of 50 cents. This limited-time deal is available exclusively through the McDonald’s App and is applicable […]