Time

We are having a big philosophical discussion about calendars and time in my history class. I think the jist of it is that time in numerical terms is a creation of man that depends on when you start it. We could have divided the day into 6 parts or 10 parts if we wanted.

There are all these sayings about time and how it passes and how we divide it. Should we live by all these divisions of time and plan time for fun, for school, for sex, for work, for relaxing? Or should be just try to do a chunk of things each day, or a certain amount of things per month? In today's world, it seems as if failure is eminent if a person doesn't plan for time in some way. We need to meet deadlines, or fit into the lives of others who govern their time based on hours and days. Can we even live based purely on the rotation of the sun: day and night, sunrise and sunset? Or does that idea no longer exist?