[tz] EST/EDT vs AEST/AEDT in AQ [SEC=UNCLASSIFIED]

[random832 at fastmail.us]

On Fri, Apr 12, 2013, at 4:45, Tobias Conradi wrote:
> > Your own table shows that the abbreviations letters can mean different things.
> D for %s never means anything else than 1:00 saving. HD and HS for %s
> always mean less than 1:00 saving and DD and DS always mean 2:00
> saving.
> 
> So, you introduce a new meaning for D for %s.

There is no rule that a specific string always means a specific time
offset. The rule is supposed to be to use what is used locally. For
example, New Zealand before 1945 uses NZMT/NZST for 0:30 saving.
European rules use "M" for "midsummer" 2:00 saving time of the 1940s
even though other rules use it for "mean" time.

You are inferring a systematism where non exists.