Have you ever thought about how people kept track of time while the Bible was being written? In the very first chapter of the Bible we see a measure of time as the Bible says, "God called the light Day, and the darkness he called Night. And there was evening and there was morning, the first day." - Genesis 1:5 ESV.
In another Bible passage we find the use of a sundial:
"'And this is the sign from the LORD to prove that he will do as he promised: I will cause the sun's shadow to move ten steps backward on the sundial of Ahaz!'" So the shadow on the sundial moved backward ten steps. - Isaiah 38:7-8 NLT
Some Bible scholars may even claim that the Bible teaches time management because Psalm 90:12 says, "So teach us to number our days that we may get a heart of wisdom."
This infographic Demandforce shows the development of tools used for time keeping and time management.