Sure, I know all about the joy of adjusting tz databases, etc. There are a whole lot of things here in the US that have basically never required these updates.

Sure, I know all about the joy of adjusting tz databases, etc. There are a whole lot of things here in the US that have basically never required these updates. And, well, there's all the problems where people have assumed timezones won't change, and e.g. have stored timestamps of future events in UTC in databases that really semantically are supposed to be at 9AM in a given timezone.