Poul-Henning Kamp wrote:
In message <[EMAIL PROTECTED]>, Greg Hennessy writes:
On Fri, 2005-08-12 at 08:44 +0200, Poul-Henning Kamp wrote:
In message <[EMAIL PROTECTED]>, Greg Hennessy writes:
Will you support a proposal that keeps leap-second (or -minutes),
but mandates that they be determined 40 or 50 years in advance ?
Determined to what accuracy?
Whatever the prediction is able to nail it to.
I realize that this means that the bounds on |UT1-UTC| increases
to about a minute, worst case, but already given todays predictive
capabilities, I think it will be possible to keep the difference
within a handful of seconds.
I personally would NOT support such a proposal then.
I might be willing to support a proposal that calls for broadcast of the
difference of UT1-UTC as well of a long term determination of leap
seconds.
I took for granted that the UT1-UTC difference needs to be made
electronically available.
Currently UT1-UTC is made available on the broadcast time
signals (WWV, Rugby, etc) to a resolution of 0.1 seconds.
The encoding assumes |UT1-UTC| < 0.9 seconds.
Anybody have any idea how many systems actually make use
of this? How this signal deals with the difference going
over 0.9 second is, I think, a relatively minor point but
it does need to be considered.
Ed Davies.
