Steve Allen wrote "In the time scales for TAI, LORAN-C, GPS, and
now BST the word "day" already has a meaning more clearly
communicated by "atomic day".
Is BST British Summer Time? If so, is there some new statute in the
UK adopting time offset from UTC rather than offset from the ill-defined
GMT?
I observe that the [U.S.] International Telecommunications Advisory
Committee is part of the U.S. State department. The part of that
committee discussed below is known in full as International
Telecommunications Advisory Committee, Radiocommunications sector, Study
Group 7: Science services, Wo
;
I have also read, although I do not recall exactly where, that the UK
Parliament debated changing the law to specify that the basis of time
was UTC, but in the end no action was taken.
On 2010-08-05 3:17 PM, Jonathan E. Hardis wrote:
On Thu, 05 Aug 2010 13:54:49 -0400
ashtongj wrote:
If the
On 2010-08-10 11:03 AM, Poul-Henning Kamp wrote:
The much larger body of non-working code, which needs to be fixed
if we continue the leap-second stunt, is not mentioned once in the
"Favouring change" column.
If one actually wants to compute legally correct durations given the
starting and en
On 2010-08-10 5:42 PM, Poul-Henning Kamp wrote:
I am 100% convinced that the EU-court will find that it is painfully
clear that the directive mandates that all countries switch to
summer-time at the exact same moment, relative to the UTC timescale,
simply on the basis that the directive would be
If dropping leap seconds is ultimately approved, we will need at least
two names for the new time scale. Perhaps something like this
(underscores are digits to be determined later):
TI: (Time, international) The time scale known as UTC from 19__ until
202_, and which ceased to observe leap sec
If, for sake of discussion, we view TAI as correct, then according to HP
Application Note 1289, The Science of Timekeeping, D. W. Allen, N.
Ashby, and C. C. Hodge, the irregularities in the rotation of the earth
are at the level of 1.5 × 10^-9 (page 20). Frequency transfer using HF
radio broadc
A theme in this list recently has been the amount of attention the
various ITU and allied committees have paid to technical requirements
they have immediate knowledge of, and the lack of attention to public
attitudes. I think that the most important emerging time-keeping
challenge facing the pu
For more information about one of the radio time and frequency stations, see
http://www.nist.gov/physlab/div847/grp40/wwv.cfm
Gerry Ashton
On 2010-08-13 7:44 AM, p...@2038bug.com wrote:
This is very interesting.
But I do notice the words "supposed to" and "could cause".
Would you be able to fi
Tony asked "Are there any requirements for mean solar time other than
astronomy and celectial navigation?"
Land surveyors still use sun and star sights to find azimuth. While GPS
can also be used for this function, the total station (theodolite and
laser distance meter combined) is an indispe
Here is a cost that has not yet been mentioned. Many sources still refer
to the basis of civil time (before adjustment for time zone and daylight
saving) as Greenwich Mean Time. This can still be justified because
although the meridian for which UTC is the mean solar time moves over
the surface
My replies are interspersed among Paul's questions.
On 2010-01-14 12:29 PM, p...@2038bug.com wrote:
it will be necessary to modify all [...]
Why?
Because they will be wrong, civil time will not be based upon the mean
time an Greenwich, for any meaning of the word Greenwich.
It will a
Getting back to basics is good, but my view is different from Mr.
Finkleman's.
The world of measurements is effectively divided into the realms of
discussion, publication, and research, versus the realm of commerce. In
the first realm, you can do whatever you want (if you live in a place
wher
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