In the account of Jesus’ crucifixion in the Gospel of Mark we read, “And when the sixth hour had come, there was darkness over the whole land until the ninth hour” (Mk 15.33). This detail is part of the pre-Markan passion story and, since Mark is the earliest of our Gospels, therefore a very early tradition that deserves to be taken seriously.
"God gave science to human beings, so that we would praise Him for the miracles He performs." (Wisdom of Sirach 38:6)