[tz] Ambiguous abbreviations for Australian timezones when daylight savings is in affect [SEC=UNCLASSIFIED]

[Tobias Conradi]

>  but I'd
> prefer to get a concensus as to when the D/S abbreviations came into more
> promenant usage, if indeed the D/D abbreviations were ever more commonly
> used.

I don't see this is a fact that the TZ DB cares about, e.g. I see no
evidence the code SET had been in use for time in Sweden:

ftp://ftp.iana.org/tz/data/europe

1:00:14    SET           Swedish (1879-1899)*

Changing abbreviations on a year basis requires much more research.

Yearly adjusted : people need more time to decode an acronym

Not-yearly adjusted: people understand acronyms for past times as they
do for current.

--
Tobias Conradi
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10115 Berlin
Germany

http://tobiasconradi.com