What would happen with GPS if time dilation would not be taken into account (EMC2):

Einstein’s theory of relativity revealed how time and space are the same fabric (in physics, spacetime is any mathematical model that combines space and time into a single interwoven continuum). So even if you stay still, you still travel in time.

Einstein’s laws of special and general relativity are applied in modern day technologies, such as GPS satellites, where the accuracy of calculations would drift more than 7 miles per day if consequences such as time dilation would not be taken into account. Time dilation is best illustrated by how moving clocks run slower.

In the case of International Space Station, time is slower due to the velocity in circular orbit.