Food & Beverage Dunkin’ Is Taking Over National Coffee Day, Offering Free Brews All Day The brand is trying to emphasize its change from its 2018 rebrand On Sept. 29, Dunkin' will offer guests a free medium hot or iced coffee. Kacy Burdette By Mónica Marie Zorrilla September 22, 2020 Dunkin’ doesn’t care what your calendar says: Sept. 29 is officially National Dunkin’ Day, not National Coffee Day. Mónica Marie Zorrilla @monicroqueta monica.zorrilla@adweek.com Mónica is a breaking news reporter at Adweek. Recommended articles