Today, on the Winter Solstice, hurry to snag your free Dunkin’ Midnight coffee when you order ahead on their app. If you are not a Dunkin’ Donuts member yet, you can sign up here at dunkinrewards.com or on the Dunkin app. Stay warm with this hot goodie on the shortest and darkest day of the year. You can pair the coffee with other perks they are offering through December 24 such as a free donut with any beverage purchase. Check out their website here for more details.