September 29 is Coffee Day ,also known as National Coffee Day or International Coffee Day. Coffee purveyors are offering freebies to mark the occasion. Dunkin' Donuts is giving away free medium hot or iced dark roast coffees on Tuesday. Krispy Kreme is upping the ante with a free glazed doughnut and a free 12-ounce cup of coffee at participating locations in the U.S. on Tuesday. A small cup of Major Dickason's Blend is available for free at Peet's Coffee & Tea locations with a food purchase.