On 2017-01-31 04:15 AM, michael.deckers via LEAPSECS wrote:
On 2017-01-30 21:36, Brooks Harris wrote:
.................................... It seems to me this is where the
UTC
specifications are scattered over many documents and no one document
makes it
clear by itself, and this leaves room for misunderstanding.
Actually, there is just one official document
defining UTC (ITU-R Rec 460); plus of course
the Bulletins C of the IERS.
Generally I agree these are the two most relevant documents. But Rec 460
doesn't point you to Bulletin C specifically, IERS has many other
products, and the BIPM Annual Report on Time Activities looks official,
and it is. Its scattered in the sense you can't find anything, or,
rather, you find many things, and Rec 460 doesn't say "as per IERS
Bulletin C". Only after much research might you conclude Bulletin C is
the most official, or most important, or most punctual, of the IERS
products. Even now I'm not completely sure of that, that there isn't
some other document somewhere....
-Brooks
Everything else
is interpretation and not necessarily correct.
So I do not see a problem with scattered
documents.
What is missing quite a bit, as far as I can see,
is a set of commonly accepted and applied "mises en
pratique" for the leap seconds of UTC: documents
that provide guidance for dealing with leap seconds
in specific areas.
Michael Deckers.
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