[tz] leap_second.list not updated after latest IERS Bulletin C

Maximilian Linhoff maximilian.linhoff at tu-dortmund.de
Mon Dec 11 09:36:55 UTC 2023

Dear Paul,

Astropy uses the file at the URL I mentioned as a fallback for obtaining 
leap second information:


On 07.12.23 20:52, Paul Eggert wrote:
> On 2023-12-06 05:22, Maximilian Linhoff via tz wrote:
>> There is IERS Bulletin C from 2023-07-04 announcing no new leap
>> second on 2023-12-31
> That's been installed in the development repository here:
> https://raw.githubusercontent.com/eggert/tz/main/leap-seconds.list
> Is there some reason we need a new TZDB release because of this? Do 
> you use software that requires that this file come from a TZDB 
> release, rather than from other sources such as the one mentioned above?
> I recall that traditionally ntpd needed leap-seconds.list and looked 
> at the expiration but am not up to date with what its successor NTPsec 
> is doing. chrony does not currently use leap-seconds.list - and 
> although this has been proposed for a future release, that proposal 
> does not look at the expiration; see:
> https://www.mail-archive.com/chrony-dev@chrony.tuxfamily.org/msg02727.html 

Maximilian Linhoff
PostDoc Astroteilchenphysik

Technische Universität Dortmund
Fakultät Physik / Astroteilchenphysik
Otto-Hahn-Str. 4a
44227 Dortmund

Tel.: +49 231 755 8895
maximilian.linhoff at tu-dortmund.de

More information about the tz mailing list