Subject: Re: [calsify] [Technical Errata Reported] RFC5545 (5505)

From: Bernard Desruisseaux <[email-masked]>
Date: Mon, 1 Oct 2018 12:57:14 -0400

Steve, Keith,

Have you considered requesting the addition of these missing time zones to the IANA Time Zone database?
Etc/GMT-20
Etc/GMT-23
Etc/GMT-0330 (or whatever TZID IANA comes up with)
Thanks,
Bernard

> Le 28 sept. 2018 à 07:16, Keith Harris <[email-masked]> a écrit :
> 
> Perhaps TZID=GMT-03:30 is another example of a offset defined zone that can not neatly be done without a colon.
> 
> (Though I agree that there could be a signal here regarding interoperability, but for me it would be to steer away offset zones and towards geographic names: TZID=America/St_Johns)
>  <https://urldefense.proofpoint.com/v2/url?u=https-3A__youcanbook.me&d=DwMFaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=1KWjrk6WfltMq-xNvZw71GcUXlVStaOFvtc__OOO9f8&m=SbqScqLW3e43wncYDVPNkAcAjdcjLv3YLBOq771Q6EI&s=NObzeBCeCKlG_4PZY7Iak31kI_kpdWqnA1orDzCr8QI&e=>
> 
> 
> 
> 
> On Thu, 27 Sep 2018 at 17:50, Steve Allen <[email-masked] <mailto:[email-masked]>> wrote:
> On Thu 2018-09-27T11:09:02-0400 Bernard Desruisseaux hath writ:
> > As you rightly mentioned, we now have the IANA Time Zone Database.
> >
> > Why would someone want / need to specify   TZID=GMT-03:00  instead of  TZID=Etc/GMT-3?
> 
> I would specify TZID=GMT-20:00 and TZID=GMT-23:00, and those are
> not found in IANA Time Zone database.
> 
> For practical purposes, the first is the time zone in which the
> astronomical calendar for Lick Observatory has always been expressed.
> The astronomical day begins at noon local time.  The lack of
> availability of those means that modern computing systems do not
> recognize the traditional day boundaries, so the calendars are
> presented with footnotes to be interpreted by humans.
> 
> The second is the time zone in which the calendar for Keck Observatory
> is expressed.
> 
> > Perhaps this iCalendar inconsistency is actually a good thing for interoperability!
> 
> It is a bad thing for situations which are not common enough to be
> accommodated by the widely-used interfaces.
> 
> --
> Steve Allen                    <[email-masked] <mailto:[email-masked]>>              WGS-84 (GPS)
> UCO/Lick Observatory--ISB 260  Natural Sciences II, Room 165  Lat  +36.99855
> 1156 High Street               Voice: +1 831 459 3046         Lng -122.06015
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