A fantastic book that deals with the cultural significance of timekeeping along with other ancient technological advancements is <i>The Discoverers</i> by Daniel Boorstin.<p><a href="http:&#x2F;&#x2F;www.amazon.com&#x2F;Discoverers-Daniel-J-Boorstin&#x2F;dp&#x2F;0394726251&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.amazon.com&#x2F;Discoverers-Daniel-J-Boorstin&#x2F;dp&#x2F;03947...</a>