[LEAPSECS] the big artillery

[Dennis Ferguson]

I see Terrestrial Time being expressed as a Julian Date quite
a lot.  What is the unit of that number if not "Day"?

Dennis Ferguson

On 30 Oct, 2014, at 09:16 , Rob Seaman <seaman at noao.edu> wrote:
> "Day" is a fundamental physical fact about a planet or moon.  "Minute" is an artificial concept.  Its intuitive role as a fraction of a day takes precedence over serving as a round number of equally artificial SI seconds.  There are two kinds of time that must be accommodated.
> 
> Rob Seaman
> NOAO
> --
> 
>> On Oct 30, 2014, at 8:06 AM, Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:
>> 
>> In message <20141030143121.GA20281 at ucolick.org>, Steve Allen writes:
>> 
>>> I wonder if the ITU-R process can go to its completion without
>>> introducing any document which points out that to omit leap seconds
>>> from a time scale called UTC is to redefine the word "day".
>> 
>> You mean the same way leapseconds redefine "minute" by making
>> them have the counter intuitive numbers of seconds ?
> 
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