bug#641: format-time-string %Z does not work, starting with Emacs 22.2

[Lennart Borgman (gmail)]

Juanma Barranquero wrote:
> On Thu, Aug 7, 2008 at 22:36, Lennart Borgman (gmail)
> <lennart.borgman@gmail.com> wrote:
>
> > I would expect there to be just a little bit more than 24 possible different
> > return values from "%z". It would be 24 if all zones where whole hours
> > different from UTC (or what it is called now). But since some zones uses
> > half hours it could be more.
> >
> > However 87 is a surprisingly high figure for me.
>
> You're assuming too much. Countries in the same apparent time zone do
> not have to follow the same DST rules, for example.

Yes, I surely am assuming something that is wrong ;-)

Is not "+0200" the offset from the UTC standard time zone (or whatever 
it is called)? Is there 87 such values?