Because time is a social construct. It was only created when civilization was created. Since there was no one to create time in the beginning of Earth we had to create it as far back as we could. So basically science as stuff created time to help people. Time wasn't a thing back then. It only became a thing when people became a thing.
Hope this Helps!
When you arrive in Iowa, it is likely to be very hot. <span>If you are unaccustomed to really hot, humid weather, be sure to drink plenty of water during exercise or outdoor activities. The combination of heat and humidity can make an 85-degree day seem well over 100 degrees.</span>