Our clocks of today have taken more than 6,000 years of various types of inventive devices to become what they are now. At first, the hours of the days were no where near as important as the four quadrants of time that was set up by farmers for the best crop harvesting. It was not until the early Egyptian civilizations really began to calculate their time factors by days instead of on four separate divisions. The Egyptian began their daily time into two sessions during the day. They first started using the obelisks shadows to show the time of high noon. But there were slightly more precise ways of time devises like the hourglass, indexed candles that were made to burn at a fixed rate, and there were some forms of water devices.
As the medieval times came along, cities were larger and religion was an important part of these cities and times, mechanical tower clocks came along for the use of regulated prayer calls. Besides the calls of prayer of God, there came along the non-pendulum clock for the churches and monks. As government and civilizations grew so did the importance of the preciseness of time.
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It was not until 1556 that Christian Huygens was the one to add the pendulum that he had designed and he found that it was very precise in keeping time, unlike those before that were too slow or too fast with out the pendulum. By 1670 minute hands were added for even better preciseness down to the seconds to a minute or two only being off per a day instead a 30-minute difference per a day.
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