Clock is a few seconds slow according to one of the GMT time links, and indeed my phone.
I'm on my second generation of this AT&T router, so, many installations and years without seeing this option.
Question is, can I feel confident about hitting the button. If it wasn't a new installation, I'd be a bit more gung-ho, but several hours have gone into setting stuff up again.
I do have restore points, but am never entirely confident about them.