Matthew 27:45
Now from noon until three o'clock in the afternoon there was darkness over all the land.
Mark 15:33-34
And when it became noon there was darkness over the entire land until three o'clock in the afternoon.
Luke 23:44-45
Now when it was about twelve o'clock noon, darkness came over all the land until three o'clock in the afternoon, for
Mark 15:25
It was nine o'clock in the morning and they crucified Him. [Note: John 19:14 indicates that the crucifixion took place about noon. This can be harmonized if we take Mark's account to mean when the entire process began].
Revelation 8:12
[When] the fourth angel sounded its trumpet [I saw] one third of the sun, one third of the moon, and one third of the stars being struck, so that one third [of their light] would become darkened. So, the daytime had [only] one third of its [normal] light, and the nighttime was the same way.
Revelation 9:2
And the fallen star opened the shaft leading to the deep pit and smoke drifted up from the shaft like smoke from a huge furnace. And the sun and the sky were darkened by the smoke from the shaft.