4: Clocks, Ancient Calendars, and Absolute Craziness

Tracking time goes all the way back to the first people who ever lived. How did they decide on months? Weeks? Years? Did they use the starts, the moon, seasons, or political ventures to define their passage through time? Rob and Joseph rewind the clock to the dawn of time then zip up through to the present to see how and why mankind has arrived at the calendar system we commonly employ in the 21st century.