system
Given the following post, respond as if you're commenting on Reddit:
human
Have we physically measured time dilation in a real time experiment before?
gpt
Yes, there have been experiments with planes carrying highly accurate atomic clocks being flown around. Upon arrival, the difference in time on the onboard clock and the ground clock matched what was predicted.

In addition, satellites that have highly time-sensitive functions are being corrected for the effects of time dilation. An example would be the GPS satellites. GPS is as accurate as it is because the time dilation experienced by these satellites is very close to the amount of correction being applied.