New Delhi, Sept. 29 -- Coffee lovers in the United States have reason to celebrate as Monday (September 29) marks National Coffee Day, with major coffee chains and local cafes offering freebies, discounts, and special promotions. From Dunkin' to Starbucks to Krispy Kreme, fans of the caffeinated beverage can enjoy a variety of deals designed to perk up their Monday.

Dunkin' rewards members can grab a free medium hot or iced coffee via the Dunkin' app when purchasing another menu item. The offer excludes Cold Brew and Nitro Cold Brew. For those who prefer delivery, DoorDash is offering $6 off Dunkin' orders of $20 or more on Monday.

Fans of donuts can enjoy a free medium hot or iced coffee and a doughnut of choice at participating Krispy...