I actually have a sundial time piece I got when in boy scouts. (and no, it wasn't back in the stone ages)It has instructions along with an onboard compass to adjust for magnetic north vs true north so the time will be more accurate as well as location correction.
I am not in the industry nor do I have first-hand knowledge. However, I have been told prior to covid many of the more significant larger components are produced in China and take at least 18 months from order to receiving them. This is during times where we are supposed to be trading partners. Since covid I am sure that time has increased. If it were war or some other issue, we would be in significant trouble.Everybody keeps talking about the grid going down. Why isn't (or is there) anything being done to solve that issue?