system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: how does GPS work by just asking a satellite what its time is?

I understand it works we use triangulation via asking 3 or 4 satellites information. But if I know I'm:

*X metres away from point 1
*Y metres away from point 2 
*Z metres away from point 3

 I can work out my location with triangulation...... but how do satellites sending out time signals equate to distance?

Also, are all the satellites working on the same time? if so who's time? Are they all ticking that atomic clock in unison? Or are they are different? if so are they using the current time zone of where they are?
gpt
Yes - all the satellites have the same time, as they each have an atomic clock on board.

Now, the signal takes an amount of time to travel from the satellite to the GPS receiver.

When you look at the times you're receiving from all of the satellites, due to the fact that it takes a certain amount of time to get to your receiver, you'll see ever-so-slightly different times from each of the satellites.

By comparing these times, you can work out where you are in relation to those satellites.