The annual deal is known as the "Day of the Dozens" because it falls on 12/12 every year and is good for a dozen donuts.
You can find out if your local Krispy Kreme is participating in the promotion at www.krispykreme.com/dayofthedozens.
The regular price for a dozen Original Glazed Donuts is about $7.99 (may vary).
Photo via Krispy Kreme.