FW: Australian timezone abbreviation EST

Olson, Arthur David (NIH/NCI) [E] olsona at dc37a.nci.nih.gov
Sun Aug 1 17:13:20 UTC 2010

I'm forwarding this message from Joachim Wieland, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately.

From: joachim.wieland at googlemail.com [joachim.wieland at googlemail.com] On Behalf Of Joachim Wieland [joe at mcknight.de]
Sent: Sunday, August 01, 2010 12:55 PM
To: tz at lecserver.nci.nih.gov
Subject: Australian timezone abbreviation EST

Hi there,

I am a bit confused by the definition of some Australian timezones in
the database, maybe someone could shed some light here...

When I look at Melbourne for example, I see:

Rule    AV  2008    max -   Apr Sun>=1  2:00s   0   -
Rule    AV  2008    max -   Oct Sun>=1  2:00s   1:00    -
Zone Australia/Melbourne 9:39:52 -  LMT 1895 Feb
            10:00   Aus EST 1971
            10:00   AV  EST

It looks like there is only one valid timezone abbreviation, which is
EST! EST seems to change its offset whenever Australia/Melbourne
changes from dst or back? Isn't that more than confusing? How would
one know what time "4:15pm EST" is?! Or am I only misreading this?

http://www.travelmath.com/time-zone/Australia/Melbourne tells me:

"The GMT offset is currently UTC/GMT +10 hours (EST). It will change
[...]. The new GMT offset will be UTC/GMT +11 hours (EST)."

Thanks for your help,

PS: I am not subscribed to the list, it would be nice if you could
copy me in your replies. Thanks.

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