Four of These Things Belong Together

Four verses.  All saying the same thing.

"Now from the sixth hour there was darkness over all the land until the ninth hour."
Matthew 27:45 (ESV)

"And when the sixth hour had come, there was darkness over the whole land until the ninth hour."
Mark 15:33 (ESV)

"It was now about the sixth hour, and there was darkness over the whole land until the ninth hour."
Luke 23:44 (ESV)

"The heavens declare the glory of God, and the sky above proclaims his handiwork."
Psalm 19:1 (ESV)