FORT WAYNE, Ind. (WOWO): Tuesday is National Coffee Day, and several chains across the country are helping caffeine-cravers celebrate the “holiday” by offering free coffee.

In Fort Wayne, participating chains include Dunkin' Donuts and McDonald's. Throughout the day, Dunkin' Donuts is offering a hot or iced dark roast iced coffee, and McDonald's is giving away small cups of McCafe coffee.