Fwd: NO leap second will be introduced at the end of June 2013

-------- Original Message --------
Subject: NO leap second will be introduced at the end of June 2013
Date: Fri, 18 Jan 2013 10:37:52 -0600
From: Sam Wormley
Newsgroups: sci.geo.satellite-nav

INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)

SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE


SERVICE DE LA ROTATION TERRESTRE
OBSERVATOIRE DE PARIS
61, Av. de l'Observatoire 75014 PARIS (France)
Tel. : 33 (0) 1 40 51 22 29
FAX : 33 (0) 1 40 51 22 91
Internet :

Paris, 18 January 2013


Bulletin C 45

To authorities responsible
for the measurement and
distribution of time



INFORMATION ON UTC - TAI


NO leap second will be introduced at the end of June 2013.
The difference between Coordinated Universal Time UTC and the
International Atomic Time TAI is :

from 2012 July 1, 0h UTC, until further notice : UTC-TAI = -35 s

Leap seconds can be introduced in UTC at the end of the months of December
or June, depending on the evolution of UT1-TAI. Bulletin C is mailed every
six months, either to announce a time step in UTC, or to confirm that there
will be no time step at the next possible date.


Daniel GAMBIS
Director
Earth Orientation Center of IERS
Observatoire de Paris, France
__________________________________________

On Jan 18, 4:38*pm, Sam Wormley wrote:
-------- Original Message --------
Subject: NO leap second will be introduced at the end of June 2013
Date: Fri, 18 Jan 2013 10:37:52 -0600
From: Sam Wormley

Newsgroups: sci.geo.satellite-nav

* * INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)

SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE

SERVICE DE LA ROTATION TERRESTRE
OBSERVATOIRE DE PARIS
61, Av. de l'Observatoire 75014 PARIS (France)
Tel. * * *: 33 (0) 1 40 51 22 29
FAX * * * : 33 (0) 1 40 51 22 91
Internet *:

* * * * * * * * * * * * * * * * * * * * * * Paris, 18 January 2013

* * * * * * * * * * * * * * * * * * * * * * Bulletin C 45

* * * * * * * * * * * * * * * * * * * * * * To authorities responsible
* * * * * * * * * * * * * * * * * * * * * * for the measurement and
* * * * * * * * * * * * * * * * * * * * * * distribution of time

* * * * * * * * * * * * *INFORMATION ON UTC - TAI

NO leap second will be introduced at the end of June 2013.
The difference between Coordinated Universal Time UTC and the
International Atomic Time TAI is :

* * from 2012 July 1, 0h UTC, until further notice : UTC-TAI = -35 s

Leap seconds can be introduced in UTC at the end of the months of December
or June, *depending on the evolution of UT1-TAI. Bulletin C is mailed every
six months, either to announce a time step in UTC, or to confirm that there
will be no time step at the next possible date.

* * * * * * * * * * * * * * * * * * * * * *Daniel GAMBIS
* * * * * * * * * * * * * * * * * * * * * *Director
* * * * * * * * * * * * * * * * * * * * * *Earth Orientation Center of IERS
* * * * * * * * * * * * * * * * * * * *Observatoire de Paris, France
__________________________________________

Tell me Sam,you have just encountered a new approach to the leap
second which suggests that the Earth turned in exactly 24 hours back
in 1820 and is now drifting away from that value -

"At the time of the dinosaurs, Earth completed one rotation in about
23 hours," says MacMillan, who is a member of the VLBI team at NASA
Goddard. "In the year 1820, a rotation took exactly 24 hours, or
86,400 standard seconds. Since 1820, the mean solar day has increased
by about 2.5 milliseconds."

http://www.nasa.gov/topics/solarsyst...ra-second.html

I have always valued the ability to maintain an open and transparent
discussion that can be understood by anyone with a love of timekeeping
and its links to planetary cycles so here we have a 'new' approach
which completely ignores your favorite 'solar vs sidereal' spiel that
you and everyone else here pushed for the last decade.I have known
that the academics couldn't compete with a genuine astronomer and
readers here have every reason to pay attention as to why this new
dishonesty is every bit as damaging as the old right ascension
reasoning even though it uses the same celestial sphere framework
where you conclude that the Earth doesn't turn once in 24 hours.

It is not that you are dishonest,a cult phenomena with variable
hypothesis never considers itself less than authoritative,it is that
readers with a love of astronomy and common sense would see it as a
genuine opportunity to regain a stable narrative before any more
damage is done.It is not a question of winning the argument,it is
sharing a load that future generations will be grateful for in terms
of productive astronomical output instead of dummies impressed with
the accuracy of their watches and clocks.

On Jan 18, 4:38*pm, Sam Wormley wrote:
-------- Original Message --------
Subject: NO leap second will be introduced at the end of June 2013
Date: Fri, 18 Jan 2013 10:37:52 -0600
From: Sam Wormley

Newsgroups: sci.geo.satellite-nav

* * INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)

SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE

SERVICE DE LA ROTATION TERRESTRE
OBSERVATOIRE DE PARIS
61, Av. de l'Observatoire 75014 PARIS (France)
Tel. * * *: 33 (0) 1 40 51 22 29
FAX * * * : 33 (0) 1 40 51 22 91
Internet *:

* * * * * * * * * * * * * * * * * * * * * * Paris, 18 January 2013

* * * * * * * * * * * * * * * * * * * * * * Bulletin C 45

* * * * * * * * * * * * * * * * * * * * * * To authorities responsible
* * * * * * * * * * * * * * * * * * * * * * for the measurement and
* * * * * * * * * * * * * * * * * * * * * * distribution of time

* * * * * * * * * * * * *INFORMATION ON UTC - TAI

NO leap second will be introduced at the end of June 2013.
The difference between Coordinated Universal Time UTC and the
International Atomic Time TAI is :

* * from 2012 July 1, 0h UTC, until further notice : UTC-TAI = -35 s

Leap seconds can be introduced in UTC at the end of the months of December
or June, *depending on the evolution of UT1-TAI. Bulletin C is mailed every
six months, either to announce a time step in UTC, or to confirm that there
will be no time step at the next possible date.

* * * * * * * * * * * * * * * * * * * * * *Daniel GAMBIS
* * * * * * * * * * * * * * * * * * * * * *Director
* * * * * * * * * * * * * * * * * * * * * *Earth Orientation Center of IERS
* * * * * * * * * * * * * * * * * * * *Observatoire de Paris, France
__________________________________________


Isn't it wonderful that any reader can come here and take the
enjoyable journey through the history of timekeeping despite the
attempt of academics to bury the details and the references used in
creating the systems we use today and every day.For a start,the
fundamental unit of timekeeping is not the second,minute,hour or day -
the fundamental unit of timekeeping is the proportion of days to
annual cycles/years and from there into the creation of the 24 hour AM/
PM cycle as an average from those 1461 natural noon cycles.The
transfer of days/years to rotations/orbital circuits emerges as a
matter of course although the tricky part is knowing where the 365 day/
366 day format separates from the raw details of 365 1/4 rotations per
circuit.

The primary references involved an annual flood and the annual
appearance of a certain star - in this case Sirius where the ancient
astronomers noticed that the star would appear as a singular point of
light in the dawn glare for 3 years of 365 days but on the 4th cycle
it would not show up until the next day -

"..therefore it shall be, that the year of 360 days and the 5 days
added to their end, so one day shall be from this day after every 4
years added to the 5 epagomenae before the New Year, whereby all men
shall learn, that what was a little defective in the order as regards
the seasons and the year, as also the opinions which are contained in
the rules of the learned on the heavenly orbits, are now corrected and
improved." Canopus decree

I have felt that NASA is the only organization with the clout to
revisit the technical details instead of compounding this train wreck
further by trumping up a worse story based on an idealized rotation in
1820 yet this doesn't come as a plea,a genuine authority doesn't do
such a desperate thing,it is implicit that if they are going to
abolish leap seconds let them do it by improving the conceptual basis
where mechanical timekeeping and planetary dynamics mesh and
separate.I got this spot on and this is no sullen exercise,this is
absolutely crucial for a productive and creative astronomical
narrative in the face of people who are merely impressed by the
accuracy of clocks and their civil purposes.

It is not a matter for some puny organization like the ITU,this is a
full blown astronomical issue with everything on the table.

On Jan 18, 10:00*am, oriel36 wrote:
dummies impressed with
the accuracy of their watches and clocks.

You are quick to criticize what you don't understand. With globe-
girdling satellite radio communications, we need accurate clocks, and
they also let us verify relativistic time dilation experimentally -
Einstein's theory of special relativity being another thing you deny.

John Savard

On Jan 19, 1:54*am, oriel36 wrote:

I have felt that NASA is the only organization with the clout to
revisit the technical details

This almost sounds like a job for the Roman Catholic Church rather
than the National Bureau of Standards; not, indeed, to propagate your
errors, but somehow to address your objections.

As I've noted, NASA hasn't changed the "story"; when the distinction
is significant, the "real" rotation of the Earth still takes 23 hours,
56 minutes, and 4 seconds, but when that detail is irrelevant, that
the mean solar day was exactly 24 hours of clock time in 1820, and is
now slightly longer, can be stated without going into the distinction
between the rotation of the Earth and the compound result of the
Earth's rotation and its orbital motion that is the solar day.

Still, looking at

http://imagine.gsfc.nasa.gov/docs/as...s/980116c.html
http://imagine.gsfc.nasa.gov/docs/as...s/970228c.html

they don't go to quite the lengths of making precise distinctions to
which you have driven me.

But here you go:

http://www-spof.gsfc.nasa.gov/stargaze/Smoon4.htm

they do still think the Moon rotates!

John Savard

On Jan 19, 1:54*am, oriel36 wrote:
although the tricky part is knowing where the 365 day/
366 day format separates from the raw details of 365 1/4 rotations per
circuit.

I suppose that "around the end of February" is not the right answer.

But that seems to be a question about the noosphere and not about the
Earth's motions - a question about human conventions of timekeeping.

While it is important for us to understand the limitations of our
conventions, the conventions themselves are irrelevant to Nature
itself. That is important to keep in mind to avoid serious confusions
in the study of Nature (which is why some people have complained when
you mention Sirius).

John Savard

"Quadibloc" wrote in message
...

On Jan 18, 10:00 am, oriel36 wrote:
dummies impressed with
the accuracy of their watches and clocks.

You are quick to criticize what you don't understand. With globe-
girdling satellite radio communications, we need accurate clocks, and
they also let us verify relativistic time dilation experimentally -
Einstein's theory of special relativity being another thing you deny.

John Savard
================================================== =
Savard is a lying bigot, Kelleher. He's quick to bluster what he doesn't
understand.
The GPS constellation disproves Einstein's insanity because all GPS clocks
are in relative motion yet remain synchronized. He couldn't verify
1/2[tau{0,0,0,t}+tau{0,0,0,t+x'/(c-v)+x'/(c+v)}] = tau{x',0,0,t+x'/(c-v)}
because it doesn't and Savard doesn't understand it.

-- This message is brought to you from the keyboard of
Lord Androcles, Zeroth Earl of Medway.
When I get my O.B.E. I'll be an earlobe.

There was a wonderful BBC documentary on this evening that centered on
the Earth's orbital journey around the Sun -

http://www.youtube.com/watch?v=lnm0WrzmHtk

The deep freeze created by right ascension modelers is beginning to
thaw and although the documentary still retains the awkward 'tilt'
explanation,the real addition is the single orbital turning of the
Earth to the central Sun as it carries the polar coordinates around in
a circle to the central Sun and when allied with daily rotation
creates the variations in the natural noon cycle,the seasons and all
the terrestrial cyclical fluctuations.The bonus is that it can be seen
in action like all good documentary evidence does -

http://www.daviddarling.info/images/...gs_changes.jpg

The necessity of a definitive maximum equatorial speed ,as opposed to
the silly right ascension 'solar vs sidereal' choices, will also break
the stranglehold on evolutionary geology and the linking of the
planet's spherical deviation with crustal evolution and motion under a
common mechanism observed in all rotating celestial objects with
viscous compositions under the name of zonal flow or differential
rotation.The enterprising empiricist may even begin to see traces of
electromagnetic properties due to internal dynamics but they too need
a definitive maximum equatorial speed to advance their research.

Of course if they trump up a new story of idealized rotation once in
24 hours back in 1820 while still retaining right ascension
reasoning,none of these topics can be pursued as a technical and
historical progression arising out of the 24 hour AM/PM system and the
Lat/Long system.By isolating Ra/Dec as a calendar based extension and
the clockwork solar system that empiricists hated so much by the late
19th century a new astronomy will emerge.