[looofooo0]

Atomic clock and hard coded GPS Location for the win?!

[martinky24]

You joke, but have fun ensuring your clock is synced to everyone elses, even if it is incredibly accurate...

[sandworm101]

Good luck syncing a clock at a random location on the ground with one in orbit. In a warzone. Without a connection to the sat with which you are trying to sync.

[raxxorraxor]

What do you mean, with a directed signal? I guess it still is a problem of signal to noise ratio even then, if the jammer is powerful enough.