Mathematical analysis of time proves that time is relative which is called relativity of time in theoretical physics

It is an interesting topics for mathematician and physicsts about time. Day by day the complexity about time is increasing. Einsteins relative theory prove mathematically that time is not a constant value. Time is relative. Simply to say the time in our universe in different space is not same. Time changes space to space. That is more clearly to that the length of time in our earth is not same as the length of the time of the moon. World reknown scientist stephen hawking briefly described time in his book "A Brief History Time". Einstein's theory of relativity explained the relativity about mass, space and time. These relative theory theory proves that time, mass and space are relative.