Does the Bible say the sun will go dark?

Everyone's life is made up of days and nights. 

We know that the sun is always shining even though it passes around to the other side of the world and gives us a night of darkness. But it is sure to come back. 

And so it is with the Sun of Righteousness. 

And though we may have our moments of despondency while it is dark and the Sun of Righteousness does not seem to shine upon us and when all the little personal conditions seem to loom so darkly, yet we know that the day will come.

Letters from the Teacher, Volume II