[tz] Tonga

Lord Buddha lord.buddha at gmail.com
Tue Sep 19 02:54:27 UTC 2017

Indeed quite probably they have not decided yet.


I know that is/has been the policy to try to find patterns/rules where none
have been formally published by the authority for a timezone.   Every/most
years this causes airlines a hiccup for Tonga/Fiji.

e.g. Actual flight time Auckland to Tonga is 2hrs 50mins.  Up to November
5th, it is displayed as 2hrs 50mins.  But from November 5th this is
calculated/displayed as just 1hr 50mins using IANA TZ info.

IATA who publish their own timezone updates to all IATA airlines based on
authoritative communication from the governments concerned. IATA publishes
that information as soon as announced, but IANA has not/does not until near
the effective date unless some more important change forces a release.

e.g. Fiji have changed when DST ends in 2018
​ and that has been published by IATA so all airline schedules are now
based on that change, but no TZ DB is offically available yet. ​

Have picked up your patch for that and used it to patch both JRE and
JodaTime and that will go live next week hopefully for us

​Anyway, have emailed​ gov.to & tweeted to see if I can get an official
position, but not too hopeful as, they just probably have not decided yet.

On 19 September 2017 at 12:25, Paul Eggert <eggert at cs.ucla.edu> wrote:

> Lord Buddha wrote:
>> Given the discrepancy between IANA and IATA (besides the letter T), does
>> any body have any authoritative/corroborating source for either position.
> I don't have any information other than what you mentioned. It'd be
> helpful to have something authoritative. Quite possibly Tonga hasn't
> decided yet.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mm.icann.org/pipermail/tz/attachments/20170919/67a96d9a/attachment.html>

More information about the tz mailing list