It's held on the second Friday in July.
Restaurants across the Philadelphia region are offering deals on French Fries.
Despite their name, they originated in Belgium, not France.
Chickie's and Pete's is discounting its crab fries to $1. Proceeds go to the Fraternal Order of Police Survivor Fund.
McDonald's is giving a free medium fry with a $1 minimum purchase in the app through Sunday.
And Checkers & Rally's offers free large fries for those who trade in a competitor's receipt.