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

[Robert Elz]

    Date:        Mon, 1 Apr 2013 13:07:39 +0200
    From:        Tobias Conradi <tobias.conradi at gmail.com>
    Message-ID:  <CAAGevbV2o+P0Rw=EPFOkyvBuwp_rZBdBBqUoHCRKF8XuEv2Lhg at mail.gmail.com>

  | Then why the IANA timezone database contains EST for Daylight saving
  | time in Eastern Australia?

It is "Summer Time" (Eastern Summer Time) which is what it is called in the
legislation.   It is also (if unimaginative) a rational name, unlike
"daylight saving" which is gibberish.

  | Again, this is not about just choosing a /new/ set, but it is about
  | one that uses one acronym for each zone during daylight saving time.

Why?

  | How would you demonstrate "official government backing" if not by
  | selecting a subset of official government websites?

You would (presumably) ask the appropriate govt department(s) for a
ruling (and appropriate here is nothing from the commonwealth govt,
except if you're asking about ACT, and certainly not the Bureau of Met).

kre