[LEAPSECS] stale leap second information

[Magnus Danielson]

Good work with the IERS folks Martin!

I agree with this approach, it is they way to do the authoritative side 
of things. USNO and NIST is at best providing a service in this aspect.

Cheers,
Magnus

On 01/12/2015 10:53 PM, Martin Burnicki wrote:
> Brooks Harris wrote:
>>
>> IERS publishes this - Its up to date (includes 2014-07-01) as of today
>> as I access it (2015-01-12).
>> http://hpiers.obspm.fr/eoppc/bul/bulc/Leap_Second_History.dat
>>
>> I'm not sure when it was updated, maybe with their Bullitin C
>> announcement.
>> ftp://hpiers.obspm.fr/iers/bul/bulc/bulletinc.dat
>>
>> If would really be good if there was one authoritative soure for this,
>> and that there was a uniform format.
>
> I've suggested at various occasions that the IERS should be the
> authoritative source for a leap second file.
>
> One reason is that the IERS is the institution which schedules leap
> seconds, and from a global (Earth/countries) point of view, another
> strong reason is that the IERS is an international institution which may
> easier be accepted by some foreign countries than the NIST, which is a
> U.S. institution.
>
> About one year ago I contacted the folks at IERS and asked them to put
> an expiration date into their leap second file since the existing one
> didn't have one.
>
> In the directory listing at http://hpiers.obspm.fr/iers/bul/bulc/ if you
> look at the previous version (Leap_Second_History.datsave from January
> 2014) then there was no expiration date, but the current one
> (Leap_Second_History.dat from January 2015) now has it.
>
> Actually there is some discussion with the IERS folks to provide in
> addition a file in NIST format which can directly be used by NTP or
> TZDB, and later by the tzdist servers. Once this has been done there is
> an authoritative source for this file.
>
> Martin
>
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