Matthew 24:29
"Immediately after the tribulation of those days the sun will be darkened, and the moon will not give its light; the stars will fall from heaven, and the powers of the heavens will be shaken.
Mark 13:24
"But in those days, after that tribulation, the sun will be darkened, and the moon will not give its light;
Revelation 6:12-13
I looked when he opened the sixth seal, and there was a great earthquake; and the sun became black as sackcloth made of hair, and the whole moon became like blood;
Revelation 8:12
The fourth angel sounded his trumpet, and a third of the sun was struck, a third of the moon, and a third of the stars, so that a third of them darkened. And a third of the day was without light, and also a third of the night.