It's National Cheeseburger Day, celebrate by adding a slice of cheese to what is known as America's favorite sandwich according to the National Day's Calendar.

The beginning of the cheeseburger dates back almost a century! The Rite Spot a restaurant in Pasadena California in the 1920's, was reportedly the first to experiment with cheese on a burger according to National Day's Calendar.

We are not aware of any restaurants offering free cheeseburgers today but mention National Cheeseburger Day at the register at Burger Fi for a $5 cheeseburger deal, and check out the BOGO offer on McDonald's app, according to an article in Fortune.

When you celebrate with a cheeseburger you can share at #NationalCheeseburgerDay!

Eat cheeseburgers and enjoy!