sors made in 1970: trying
to pretend that one technical time scale can serve two incompatible
technical purposes. I expect that will result in yet another
generation of confusion and flame wars, until all of the people and
systems who know the current definition of Universal Ti
ation 374-1 which uses the phrase "Universal Time UT2" and
does not use the term "UTC".
Today's animated discussions about unclear terminology and lack of
congruence between agencies are nothing new.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Obse
g off and when the
weather is freezing then the difference
Delta T = T(deg Fahrenheit) - T(deg Celsius) = 32 degrees
and when the temperature reaches -40 then
Delta T = 0 degrees
That difference is not a temperature, just like Delta T for eclipse
timing predictions is not a duration.
f deviations are kindof scary big, and I take them as
powerful rationale that the IANA tz timezone project should make
no effort to calculate sub-second offsets for far flung peoples.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165
On Wed 2014-11-05T11:11:38 +, Tony Finch hath writ:
> Does anyone know where SOFA iauDat got its data for 1960 from? Because
> that predates the USNO table.
By the way, which USNO table is that?
I'm wondering if it is actually a reprint of the BIH table.
--
On Wed 2014-11-05T15:49:05 +, Tony Finch hath writ:
> Steve Allen wrote:
> > By the way, which USNO table is that?
>
> http://maia.usno.navy.mil/ser7/tai-utc.dat
Yes, that is the table from the BIH, who were given responsibility
for the coordination as of the beginning of 196
e, I couldn't find anything beyond "Please don't call something
> you do TAI unless you are BIPM" :).
http://www.itu.int/rec/R-REC-TF.536/en
TF.536 is not in force. It was suppressed on 2011-02-18
I think there might be some "get off my lawn" in the story behind that.
it disappears from the
current website, for if so, then it really will look like
the IAU has taken a stand.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 High StreetVoice: +1 831 459 3
of earth rotation which is distinct from
Atomic Time, and that UTC is appropriately named because it includes
characteristics of both.
Has the IAU taken a vote or produced a further statement at a General
Assembly which changes (or even addresses) that definition of
Universal Time?
--
Steve Al
it. NTP and the NTP
pool are more robust too, so that will be better. But there were
other problems that nobody has talked about openly, and nothing in the
current versions of the Linux kernel is going to fix those.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observat
On Sat 2015-01-10T05:59:39 -0800, Steve Allen hath writ:
> other problems that nobody has talked about openly, and nothing in the
> current versions of the Linux kernel is going to fix those.
In case anyone is talking with news media there is an easy-to-grok
demo of the chaotic handling
flags
seem to be way down by now.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064http://www.ucolick.org/
if it were a time zone.
Last week I submitted a few examples of how that could work
http://www.ietf.org/mail-archive/web/tzdist/current/msg01215.html
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 H
0Z",
"observances": [
{
"name": "UTC",
"onset": "1972-01-01T00:00:10Z",
"utc-offset-from": 0,
"utc-offset-to": -10
},
That expiration data is inherent in the tzdist protocol as a way of
ma
On Mon 2015-01-12T07:10:23 -0800, Steve Allen hath writ:
> at the moment the most reliable source
> is probably the IANA TimeZone Database
> https://www.iana.org/time-zones
> That comes with a caveat that it does not instantly respond to the
> changes, so the most recent releas
Updated through IERS Bulletin C49
# File expires on: 28 December 2015
#
#@ 3660249600
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng
On Mon 2015-01-12T12:14:22 -0800, Steve Allen hath writ:
> The new version which is in github reads
>
> # Updated through IERS Bulletin C49
> # File expires on: 28 December 2015
> #
> #@ 3660249600
but also, the new version of the NIST leap-seconds.list file wh
zic and typically found in
Unix /usr/share/zoneinfo
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064h
ssary because
the decision was not only of a technical nature but had some
regulatory and legal consequences.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 High StreetVoice: +1 831 4
at any client of NTP will need in order to convert to local time.
That makes the tzdist protocol into one-stop shopping for info about
the offset from "UTC" as stored by whatever operating system.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB N
next century. I make no such claim. I have merely plotted
out the numbers in the literature. Pick your favaorite number.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 High Street
r of the entire table of
leap seconds.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064http://www.ucolick.or
obscure clues and responses to
confound the contestants.
Unless something significant changes in these discussions I don't see
how the national delegates to the ITU-R WRC in November are going to
find a basis for making their decision.
--
Steve Allen WGS-84 (GPS)
isting proven practices of systems which are working okay
rather than change things that affect the laws of member nations.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 High StreetVoice: +1
s since the epoch
does not conform to any explicit standard for a time scale, but it
does conform to the actual number of seconds which have been broadcast
by transmissions which have followed CCIR and ITU-R recommendations.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observa
nd they recommended that it should start at
midnight.
The UK and US almanacs started the day at noon through 1924.
Starting in 1925 the almanacs switched to the civil practice
of starting the day at midnight.
The citable references for these transitions are linked within
http://www.ucoli
ocuments that agrees with the
sentence in the Metrologia article. The documents from the IAU and
the CCIR were using different vocabularies for the radio broadcasts.
So there is no surprise that the head of the BIPM later apologized
about "regrettable misunderstandings, especially between a
e this is irrelevant to the activities which will happen at
ITU-R WRC-15, and I don't think that misdirecting attention will help
the ITU-R decide what to do.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.9985
e leap seconds in
radio broadcast time signals will not fix devices which are claiming
the existence of leap seconds which were never announced nor
implemented by the radio broadcast time signals.
The false servers in the NTP pool cannot be fixed by issuing a document.
leo, IEEE 1588,
BeiDou, and IRNSS and 'Just Say No' to UTC.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa C
The European CEPT Electronic Communications Committee
ruminates on the leap second situation at ITU-R WRC-15
http://apps.ero.dk/eccnews/jan-2015/wrc-15-universal-time.html
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat
s, and very different from the
random walk estimate of Matsakis at USNO.
If there is a problem with my web pages I will be happy to debate
it either publicly or discus it privately.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165
R have also not
mentioned how the option of abandoning leap seconds affects the
definition of the day.
I haven't seen how the delegates can make an informed decision to
forge a new agreement when they have inputs that do not contain
analysis of of important technical,
te for Delta T is missing then kindly
point out the citation for its values.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Sant
The final report of the UK leap seconds dialog is at
http://leapseconds.co.uk/reports-findings-dialogue/
Search for the word "congestion" where it looks as if it once had a
footnote mentioning a system which has avoided leap second problems by
adopting a purely atomic time scale.
--
S
ting system vendors to incorporate the
change, and for users of computers and cell phones to apply the patch.
By comparison, leap second announcements are crystal clear.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +
Yesterday the Asia-Pacific Telecommunity held a 3 hour session in
Bangkok on the ITU-R leap second issue as part of getting ready for
the second conference preparatory meeting (CPM15-2) that will be held
at the end of this month.
http://www.aptsec.org/2015-APG15-4
--
Steve Allen
Comparing these with the DNS mechanisms being
developed on LEAPSECS leads me to wonder ...
Are there other features which would be desirable as part of a file
intended to robustly communicate the full known history of leap
seconds?
--
Steve Allen WGS-84 (GPS
On Wed 2015-02-11T15:05:26 +0100, Steffen Nurpmeso hath writ:
> "Steve Allen" wrote:
> |The IERS Paris bureau is also providing such a file. That makes at
> |least three separate sources for this information. Each source has a
> |different timestamp, a differen
On Wed 2015-02-11T10:00:02 +, Peter Vince hath writ:
> On that link I can only see a notice that the meeting is taking place
> this week. Do you know what they decided at yesterday's meeting?
> On 11 February 2015 at 04:19, Steve Allen wrote:
> > http://www.aptsec.o
Demetrios Matsakis with Robin Young of WBUR's Here and Now
http://hereandnow.wbur.org/2015/02/18/leap-second-time
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 High StreetVoice: +1 83
An op-ed in GPS World suggest the use of a GNSS simulator
http://gpsworld.com/expert-advice-a-leap-into-the-unknown/
I wonder if attributing "prevarication" to the ITU-R was the best word.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natura
TU-R.pdf
where TAI "should not be considered as an alternative time reference."
Without the assent of the BIPM it is hard for there to be an agreed
upon name for real-time versions of time scales that are trying to
track the value of TAI (which will not actually be available until the
On Wed 2015-03-04T07:42:46 +, michael.deckers via LEAPSECS hath writ:
> On 2015-03-04 02:23, Steve Allen wrote on the
> >Getting meaninglessly pedantic, in Survey Review v19 #143 p7 (1967)
> >A.R. Robins had been talking with Sadler and Smith and with that
> >informa
farm in Oregon may be saved to disk, shipped across the
continent to North Carolina, and restarted over a second later -- or
kept on disk and replicated and restarted even later, multiple times.
What happens with a negative leap second is a lot like what happens to
non-real-time pr
It looks like Kyushu Telecommunication network is considering its
own version of the leap smear
http://www.slideshare.net/apnic/the-leap-second-is-coming-by-tomonori-takada-apricot-2015
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II
one that wants to edit the current text for
Agenda Item 1.14.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064
torical investigation for any given locale.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064h
time scale if the original
observations and equipment were meticulously calibrated.
And then they must be reduced by going back to look at, e.g.
https://plus.google.com/photos/112320138481375234766/albums/6078225731350227361
Please don't try to make this part of a General Timestamp API.
B
t to switch to some
> other timescale depending on the purpose at hand.
Exactly so. Before 1972 civil time was not SI seconds.
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat +36.99855
1156 High Street
existing
draft. Those are from
United States
Russia
UK
China
UAE, Algeria, Egypt, Jordan, Qatar, Sudan
Germany
I think this is an unprecedented level of active participation.
So it seems the CPM will be doing a lot of wordsmithing on
the document to be presented for a vote at WRC.
--
Steve Allen
Ted Folkman is a lawyer who blogs about international law
https://lettersblogatory.com/2015/03/11/letters-blogatory-opposes-abolition-of-the-leap-second/#more-20126
--
Steve Allen WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165Lat
hing working that does not get bothered by
differences of several nanoseconds, then ignore the international
recommendations and choose GPS time, Galileo, BeiDou, the Indian
satellite system time, or some PTP-based system via a device which
claims to be using one of those
for Agenda Item 1.14 there are going to be a whole
bunch of delegations arguing over the meaning of "calendar day"
with some insisting that it is related to the rotation of the earth
and others denying the validity of the question.
--
Steve Allen WGS-84 (GPS)
with firmware 3.906 or lower
OEM6 receivers with firmware 6.100(OEM060100RN) or lower
http://www.novatel.com/assets/Documents/Bulletins/2015-Leap-Second.pdf
Avaya AIC 7.2.x AIC 7.3.X for Windows/Solaris and AIX platforms
https://downloads.avaya.com/css/P8/documents/101009257
--
Steve Allen
-planning-ITU-and-other-international-planning-bodies/wrc-15-agenda-item-114
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA
Recommendation 460, that is a complete lack of concern for the
distinction between UTC and GMT.
The CCIR were wrong when they thought they could solve all problems
with a single time scale where nobody but the Time Lords would ever
have to worry about the difference.
--
Steve Allen
;t this be decided by experts" and
"what's the worst case scenario resulting from WRC-15".
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046
een
abandoned in favor of more precise modern techniques.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064http:/
in use
The BIH was woefully underfunded and I suspect that they could not
consider re-reducing the older observations to the newer system.
Everyone just had to hope that any shifts/discontinuities due to
the change of techniques and models were inconsequentially small.
--
Steve Allen
ridian on which one would stand in order to have the mean sun
overhead at noon UT1 is 0.18 s farther east than the International
Reference Meridian.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High Street
Dennis McCarthy, Wayne Hanson, Ronald Beard and William Klepczynski
write in the spirit of the bowl of petunias ...
http://gpsworld.com/expert-advice-a-leap-second-one-more-time/
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165
g the blame!
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064http://www.ucolick.org/~sla/Hgt +
ample. Leap seconds are another.
And as Boeing has just revealed about the 787, counting past 2**31
centiseconds is another. Bugs will always happen.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156
aboratories are given with decimals to 0.1 microsecond, or 100
nanoseconds.
> I don't believe 3 ns is significant for any time stamp from that
> era.
Right. There is no record of the available time scales that can
say anything about the time differences at t
https://datatracker.ietf.org/doc/draft-ietf-tzdist-service/
We choose to use those for time zones, and if at WRC-15 the ITU-R
chooses to preserve the rotation of the earth as the basis for the
calendar day then we can choose to use those protocols for leap
seconds.
--
Steve Allen
sults of the studies are
inconclusive."
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064http://www.ucolic
/ArchiveServlet?issueid=CCE8E0F3-D604-4341-847D-2450912C7378&lmid=archives
https://attendee.gotowebinar.com/register/7459379719283518978
about the leap second, preparedness, regulatory issues, etc.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Science
On Wed 2015-05-13T07:37:17 -0700, Steve Allen hath writ:
> FIA deals with financial futures, options, derivatives and is
> preparing for the leap second.
>
> https://fia.org/articles/fia-response-2015-leap-second-event
Which has moved to
https://fia.org/articles/fia-coordina
to decide what "day" means, and for all those
other details to be handled outside the kernel in the libraries and
applications.
If that decision for the kind of "day" is any form of Universal Time
then, over the long span of time, POSIX is count
CGSIC is echoing a Department of Homeland Security document about
the impending leap second.
http://www.navcen.uscg.gov/pdf/cgsic/Leap_Second_Best_Practices_20150526_Intrl_Version.pdf
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room
are on the verge of being irrelevant.
This a huge gulf between the sysadmins, their regulators who have
required the use of UTC rather than TAI or GPS, and the precice time
and frequency communities.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sc
s. And in 2012 the financial markets were not running, so
as PHK writes, this next leap should be very interesting.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831
-box defaults
can just work without any choices.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064http://www
ec.
These are good questions for the tz mail list because the denizens
there have memory of many of the crazy things that local officials
have declared during the history of the tz project.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Ro
On Mon 2015-06-01T17:36:34 +, Poul-Henning Kamp hath writ:
> In message <20150601172537.gc14...@ucolick.org>, Steve Allen writes:
>
> >We need a resolution of the issue so that the out-of-the-box defaults
> >can just work without any choices.
>
> I'm happy
n that
requires two interoperable implementations before they approve a
standard.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, C
An issue with the Linux kernel handling of leap seconds was revealed
at the end of May. The discussion thread in the LKML mentions ways of
codifying smears.
https://lkml.org/lkml/2015/6/3/891
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences
or is there an error in the TZ database?
Is your system clock set 25 seconds faster than POSIX wants?
That's actually kindof hard, because I know of no standard time
package which will do it.
Pictures of this at
http://www.ucolick.org/~sla/leapsecs/amsci.html
--
Steve Allen
Subject: APF: EOS Telescope (PMAC) clock error
The difference between 'PMAC' and Unix time is now -0.992489, and has been >=
0.050 for 10 seconds
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99
-briefs-and-ecps-for-wrc-15
Method A is supported by France.
Method C is supported by Russia.
I am certain that the diplomats are continuing to negotiate.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High
. In particular the one on
http://www.itu.int/md/R15-WRC15PREPWORK-C-0008/en
has a chart on page 13 which shows the currently known positions of
the regional groups. There is no consensus.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II
agencies have no position, and others disagree, so no consensus
is evident.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064
as had no luck getting the attention of
her own nation's delegation and she wrote to here wondering if we knew
a way. I had to write sadly that I suspect that most of the
cooperating organizations have already had their deadlines for setting
up credentials for WRC.
--
econds in new and old Cisco equipment.
There's a whole series of notes on other Cisco boxes.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -1
e one from Asia-Pacific
Telecommunity
R15-WRC15-C-0032!A14!MSW-E.docx
which prefers method A1, rejects method B, and cautions about A2.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High Street
... the press coverage of WRC-15 and the leap second
http://spectrum.ieee.org/tech-talk/computing/networks/leap-second-heads-into-fierce-debate
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High Street
prevented a
regional position from being reached.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064http://www.ucoli
Arab Spectrum Management Group (ASMG)
http://www.itu.int/md/R15-WRC15-C-0025/en
They want no change
[ 62 ]
2015-10-15
China (People's Republic of)
http://www.itu.int/md/R15-WRC15-C-0062/en
They support A1
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB
s/amsci.html
For a historic view of the LOD going back 2000 years look at the plots on
http://www.ucolick.org/~sla/leapsecs/dutc.html
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoi
ations in LOD that happen on a
weekly basis due to weather. Folks in the earth rotation bureaus want
to see a detectable earthquake-induced LOD change so that they can
publish, but I haven't seen such a paper. I believe that it is easier
to find the effect of a large snowstorm in the LOD data
A casual glance demonstrates that nobody is maintaining the blog
content at the UK Public Dialog on Leap Seconds.
http://leapseconds.co.uk/discuss/general-discussion/
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat
of an international recommendation.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064http://www.ucolick.org/~sla
The news is official. Leaps until 2023, and more studies.
https://www.itu.int/net/pressoffice/press_releases/2015/53.aspx
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1
eridian and
longitude. The resulting text was incongruous nonsense trying to
indicate some connection between longitude and atomic time. I hope
the final result of WRC makes more sense than the proposal I saw.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sc
can move toward a resolution of this issue.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064http://www.ucolick
f particular requirements.
So this is cool, and may be applicable to some applications, but I'm
not sure which ones those are.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice
years ago, so the notion of
second had a contemporary meaning which was much more figurative
than precise.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046
econd proposals
> or pUTC design decisions.
Definitely true.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa C
pond to
contemporary records of 500 years ago.
--
Steve AllenWGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High StreetVoice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064http://www.
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