[tz] Politics of TZ changes

[Paul_Koning at dell.com]

On May 18, 2014, at 10:35 AM, Arthur David Olson <arthurdavidolson at gmail.com> wrote:

> Fact finding is part of encouraging governments to do the right thing about changing daylight saving.
> 
> This week Paul Eggert noted how changes propagated to a system within a day of being released. That's the best case. What's the worst case?

For embedded systems with long QA cycles, it could easily be a year.
> 
> And: what's best practice? The most recent change to US DST was the Energy Policy Act of 2005; it was signed into law on 2005-08-08; the first change resulting from the law was 2007-03-11, meaning there was more than 18 months of advance notice. Has there been a longer lead time? Has any government gotten closer to a zero lead time than Egypt?

I distinctly remember some years ago a change that had negative lead time.  Another with lead time measured in minutes.

	paul