[tz] Commentary-only releases - let's not (was: Re: Please Don't Feed the Trolls (was Kyiv not Kiev))

[Đoàn Trần Công Danh]

On 2022-07-01 23:21:32+0300, Petro Ord via tz <tz at iana.org> wrote:
> > the current release will be out-of-date on 2023-March-21 (due to DST changes in Iran)
> I'm trying to figure it out why it will be out-of-date only on 21 March 2023

It's not necessary to publish tzdb for every other years since the
rules are predictable.

Kyiv/Kiev follows E-Eur rules, and it seems like nothing is going to
change in a foreseeable future.

For Iran, it's another story.

Current asia file has:

Rule	Iran	2021	2023	-	Mar	21	24:00	1:00
Rule	Iran	2021	2023	-	Sep	21	24:00 0	-

IOW, Iran normally observe summer time, and if the rule wasn't
changed, they will observe DST in 2023-Mar-21 (their 1 Farvardin).

However, Iran abolishes DST from 2023. Thus, there's no clock change
in 2023. If we don't publish new tzdata by then, the tzdb is obsolete.


> 
> пт, 1 июл. 2022 г. в 23:11, Guy Harris via tz <tz at iana.org>:
> >
> > On Jul 1, 2022, at 12:14 PM, Petro Ord via tz <tz at iana.org> wrote:
> >
> > >> If we somehow get through this year's late silly season with no urgent
> > >> releases, the current release will be out-of-date on 2023-March-21 (due
> > >> to DST changes in Iran) so we'd need a release a few months before then
> > >> to allow plenty of lead time for downstream maintainers and consumers.
> > >
> > > So the fact that Ukraine DST ends in October 2022 does even bother you.
> >
> > The time zone database currently has the region for Ukraine following EU rules, which specify that DST ends in October.
> >
> > Has there been an announcement from Ukraine that they will be going on permanent standard time ending in 2023?

-- 
Danh