EXTRACREDITTTTTTT+PLEEZZAAEEEESSEE

Time Dilation is basically a warp in the the space-time fabric. If space and time are constant, large gravitational masses can create errors in the time continuum. The closer you are to a massive gravitational force, the faster your clock will tick. That is why they have to reset our GPS satellites every so often. So if you and your home-boy were chilling out in space orbiting Earth, and he had to orbit at a farther distance from earth than you, your two clocks would eventually end up on different times.