[tz] Patched file australasia - time point unique abbreviations for Australia
pgoyette at juniper.net
Mon Apr 8 22:18:07 UTC 2013
Everyone argues that the current situation is untenable (and threaten
to trigger a fork) because the current abbreviations aren't in common
Yet the first proposed update tries to invent a whole new set of
heretofore unseen abbreviations?
> -----Original Message-----
> From: tz-bounces at iana.org [mailto:tz-bounces at iana.org] On Behalf Of
> Tobias Conradi
> Sent: Monday, April 08, 2013 3:07 PM
> To: David Grosz
> Cc: tz at iana.org mailing list
> Subject: Re: [tz] Patched file australasia - time point unique
> abbreviations for Australia
> Thanks for the feedback.
> On Mon, Apr 8, 2013 at 10:52 PM, David Grosz <david at dlg.com.au> wrote:
> > I don't suggest to be an authority on this subject but I wish to
> > three points:
> > 1. I don't particular like the 'H' for half-hour daylight saving.
> > it's 30 minutes or 60 minutes, it's still daylight saving so I think
> only a
> > 'D' is necessary.
> Imagine one year it is 60 and the following it is 30, then it may help
> to point people to the fact that the offsets differ. In the southern
> hemisphere two DST-periods can exist in the same year. There may also
> be cases where both offsets exist at the same time. So I took a more
> global approach, trying to define meanings for the letters preceding
> the final T.
> I now made a list at http://anna.info/wiki/IANA_time_zone_database
> documenting IANA usage.
> letters preceding final T, sometimes have one of these meanings:
> D = Daylight Saving
> S = Standard, sometimes Summer
> W = War (northamerica file)
> P = Peace (northamerica file)
> M = Mean (europe file: MMT # Moscow Mean Time)
> M = Midsummer (europe file: Moscow - M # Midsummer, also for Spain,
> France, Germany/SovietZone)
> two letters preceding final T sometimes have one of these meanings:
> DS = Double Summer (europe file: MDST # Moscow Double Summer Time,
> BDST - British Double Summer Time)
> LM = Local Mean
> My proposals would be
> S = never Summer, only Standard
> M = never mean, only Midsummer (save 2 hours)
> L = Local
> > 2. For Lord Howe's daylight saving time, could we just report AEDT as
> > the same time as Sydney, Canberra, etc?
> Oh yes. Will have to look how to do this. That would also eliminate H
> = Half hour saving. LH specific DST code would be needed for 1981 to
> 1984 when saving was one hour.
> > 3. Shouldn't we just stick to CW (Central West) instead of naming the
> > to do with the town in the zone?
> So it is done. The other was just a proposal for international format
> standardization. This won't be in the patch.
> Tobias Conradi
> Rheinsberger Str. 18
> 10115 Berlin
More information about the tz