Science is the same thing as Mythology. It is a way to prove why something happens. All mythology was, was to prove how/why/when something happens(d).

-A feather and cannonball are dropped at the exact same time and hit the ground at the exact same time. Science says it's gravity, a force that pulls the two objects towards the center of the planet, right now, that's the best explanation. So we all assume it's right.

With that notion, Time is was only created for our convenience. Just so we don't have to count moons as a form of telling 'time' or whatever you may call it.