Time is a process of physical changes. If the substance does not change, time does not exist. If there was, it did not make any sense. This continuous material change of measure called time. Some people believe that time is a concept that exists in people's minds. Some people thought more of his time will be slower; some actions more, and that his time will be faster. Speaking of which, some might say that we live in the same on Earth, time is not inequality? Wrong. Time is equal, only the order is not the same. This is why in some places rapid development, some places slow the development of the reason.
The produce of the universe, accompanied by time to produce absolutely stationary objects around the time, moving objects around time. We live in the earth is in motion, it's rotation, so above the earth there is time, if there is no rotation, then it will have the time, it is also the revolution, if not revolution, is also the time on Earth , the solar system is the state of the movement, the Milky Way, and the whole universe is in motion, if the whole universe is absolutely still, then there would be no time.