Contrary to the old warning that time waits for no one.
Time slows down when you are on the move.
It also slows down more as you move faster, which means astronauts someday may survive so long in space that they would return to the Earth of a distant future.
If you could move at the speed of light, your time will stand still.
If you could move faster than light, your time will move backwards.
Although no form of matter yet discovered move as fast as or faster than light,
scientific experiments have already confirmed that the accelerated motion causes a traveller's time to be stretched.
Albert Einstein predicted this in 1905, when he introduced the concept of relative time as part of his special theory of relativity.
A search is now underway to confirm the suspected existence of particles of matter that move at the speed greater than light, and therefore might serve as a passport to the past.
And obsession with time, saving, gaining, wasting, losing and mastering it, seems to have been part of humanity for as long as human's have existed.
Humanity also has been obsessed with trying to capture the meaning of time.
Einstein used a definition of time for experimental purposes, is that which is measured by a clock, thus time and time's relativity are measurable by any hour glass, alarm clock or an atomic clock that can measure a billionth of a second.