A Total Eclipse Will Sweep Across The United States in 2017
On August 21, 2017 a total eclipse of the sun will sweep across the United States. It will make it's way across Nebraska plunging the Cornhusker state into total darkness. While South Dakota is a little bit north of the main part, it well get dark for a bit here.
This video from the website Great American Eclipse shows the path that the eclipse will take.