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Not to rub salt in the wound, but the GPS signals are hitting the car’s GPS antenna unless you’ve disconnected that wire, pulled the fuse to the receiver, or only drive inside hardened RF shielded bunkers. When I was futzing with a little GPS breadboard module the time is what I looked for first, because if you’ve got that time signal from GPS then you know the thing is working. (PEDANTIC EDIT: The signals will hit the antenna if you’re outside unless you’ve shielded them somehow, even if you disconnect the wire.)

You could use GPS signals to synchronize clocks across the entire planet to within a microsecond while your car could be used to prop a stick up to make a sundial.

I’m going to wager there’s something else going on there. If you have a working GPS receiver, a working display (you said you did), a working “clock” that counts seconds and can give something time-like to the display to show (seems like you do), then a switch might be flipped in software and you have a data point about why GNU does what they do.

Not to rub salt in the wound, but the GPS signals are hitting the car’s GPS antenna unless you’ve disconnected that wire, pulled the fuse to the receiver, or only drive inside hardened RF shielded bunkers. When I was futzing with a little GPS breadboard module the time is what I looked for first, because if you’ve got that time signal from GPS then you know the thing is working.

You could use GPS signals to synchronize clocks across the entire planet to within a microsecond while your car could be used to prop a stick up to make a sundial.

I’m going to wager there’s something else going on there. If you have a working GPS receiver, a working display (you said you did), a working “clock” that counts seconds and can give something time-like to the display to show (seems like you do), then a switch might be flipped in software and you have a data point about why GNU does what they do.