Matthew 27:45
Now from the sixth hour to the ninth there was darkness over all the land.
Mark 15:33-34
Now at the sixth hour there was darkness over the whole land, until the ninth hour.
Luke 23:44-45
Now it was about the sixth hour, and there was darkness over the whole land till the ninth hour.
Mark 15:25
And it was the third hour, when they fixed Him on the cross:
Revelation 8:12
And the fourth angel sounded, and a third part of the sun was smitten, and a third part of the moon, and a third part of the stars; so that the third part of them was darkened, and the day lost a third part of it's light, and the night likewise.
Revelation 9:2
And he opened the bottomless pit: and there came up smoke out of the pit as the smoke of a great furnace, and the sun and the air were darkened by the smoke of the pit.