Posted in News National Cheeseburger Day 2021: McDonald’s, Burger King, Wendy’s offer deals and free food Saturday September 17, 2021 National Cheeseburger Day 2021 is Sept. 18 and restaurants are celebrating the made-up food holiday with discounts and free burgers. http://rssfeeds.usatoday.com/~/666925980/0/usatodaycommoney-topstories~National-Cheeseburger-Day-McDonalds-Burger-King-Wendys-offer-deals-and-free-food-Saturday/ Share this:TwitterFacebookWhatsAppLinkedInReddit