Is it possible to get the atomic clock timestamp from the iphone GPS?

Question

I\'m looking for a reliable way to get the time. It can\'t be tampered with and it needs to work offline. So no internet time , no user time setup in settings and no BSD u

Answer 1

The gold standard of timekeeping are the various government time observatories in the U.S. and worldwide. They provide Atomic time. That is used world wide. Apple should be using that. If the want to sync w/ the cell towers, there should be an Alternate internal time. If the tower or GPS system malfunctions all are left with incorrect time.