[tz] [tz-announce] 2018f release of tz code and data available

[Florian Weimer]

* Paul Eggert:

> On 10/22/18 10:56 AM, Florian Weimer wrote:
>> What's the exact algorithm for normalizing the date?
>> Is there only one possible way of doing this?
>
> Times past 24:00 are treated like times before 24:00, that is, HH:MM
> is considered to be HH hours and MM minutes after the start of the
> calendar day (or before the start if there is a leading '-').
>
> As with all HH:MM timestamps, leap seconds are ignored in this
> calculation. It would not be useful to count leap seconds as they are
> typically ignored in civil-time rules. The question of leap seconds
> came up recently in another thread
> <https://mm.icann.org/pipermail/tz/2018-October/027045.html> so I am
> attaching a proposed patch to try to clarify confusion in this area.
>
> Are there other possible ways of doing normalization? If so, please
> let me know, as we should nail down the spec to avoid any other
> confusion in this area.

I mainly meant how to adjust the transition rules to get a proper POSIX
rule.  Is this always possible?

Thanks,
Florian