At what point will technology be sufficient for exact local time everywhere?

It’s a thought I’ve had mulling around for a while now. I’m wondering will a point ever come when we return to completely accurate local time; each village, town and city operating on a local time synced with the sunrise/sunset—noon truly means the solar noon—with technology as the interface.

Is it possible? would we even want it, would it matter? Do we have to wait for brain chips to make a time conversion seamless?