(RNN) – To celebrate the upcoming solar eclipse, Krispy Kreme is going dark – by turning their original glaze chocolate.

The mouth-watering chocolate glazed doughnuts will be availablefor a limited time, starting Aug. 19 and 20 during Hot Light evening hours.

The doughnuts then take over the store for all-day sales on Aug. 21, the day of the solar eclipse, which will be the United States’ best opportunity to see a total solar eclipse since 1979.

Krispy Kreme says this is the first time they’ve sold chocolate glazed doughnuts, but they have previously served green glazed doughnuts for St. Patrick’s Day.

The doughnuts will be available at participating U.S. and Canada stores only. Click here to find a location near you.

Copyright 2017 Raycom News Network. All rights reserved.