labelled EST and the other EDT, neither were
official but either could still be used without ambiguity. At the
other end of the season there will be two and both will be official.
C.f. email from me dated 2006/01/13 on this subject.
Mark Calabretta
.
A simple transition from the Julian leap year rule to the Gregorian rule
(i.e. without calendrical discontinuity) would probably have been more
saleable, especially to people with no interest in Easter.
Mark Calabretta
ATNF
On Mon 2006/06/05 22:04:40 -0400, John Cowan wrote
in a message to: LEAPSECS@ROM.USNO.NAVY.MIL
there was no 1845-12-31 in Manila, any more than there was a
As magic tricks go I don't find this one very convincing - I can
clearly see the rabbits behind your back.
Mark Calabretta
ATNF
to read
the mountain of email, with its many irrelevant diversions, that has
accumulated over the last 6 years - somewhat over 9MB by my count.
Instead, I (re-)suggest that you (someone) write a position paper, or
at least a FAQ, summarising your points.
Mark Calabretta
ATNF
is to ask - what if we increased the official length of
the day before the situation gets so far out of hand, to 86400 plus some
fraction of a second?
Mark Calabretta
ATNF
other than
a political device? If so, please describe in detail how it could/would
work.
Mark Calabretta
ATNF
of the continuous time axis has a unique
UTC representation.
Mark Calabretta
ATNF
, TAI,
UT1, or something else. In fact, in the situation where it's used the
accuracy doesn't warrant it.
Mark Calabretta
ATNF
.
Is it also specified in TF.460? If so, how do they relate
it to the notion of DTAI?
In practice, refer to the example I gave on Jan/12.
Mark Calabretta
ATNF
offsets from UTC,
but only with minute resolution. I seem to remember that
Clive Feather once proposed this for an extension to the
C programming language.
... where UTC here is taken to be in the usual (fixed-radix) sexagesimal
format.
Mark Calabretta
ATNF
, and that at least one of the timescales is
genuinely discontinuous.
Mark Calabretta
ATNF
, in terms similar to the above, what will happen when
a leap hour is inserted?
Mark Calabretta
ATNF
no gaps, jumps or kinks.
The only difference between UTC and TAI is one of representation, like
the current year which may be represented as 2006 or MMVI but it's still
the same year.
Mark Calabretta
ATNF
, but that is not a necessary
consequence of leap seconds. To their credit the CCIR did not stuff up
in specifying the clock notation to be used for UTC.
Mark Calabretta
ATNF
into the future.
I am reminded of a discussion concerning the curious repetition of
1828 in e = 2.718281828... Simply reexpress the number in base 2,
base e, or something else; the pattern disappears.
Mark Calabretta
ATNF
On Mon 2006/01/09 10:38:54 -, Peter Bunclark wrote
in a message to: LEAPSECS@ROM.USNO.NAVY.MIL
I't be interesting to do an FFT on this list, and see if some of the
contributers actually ever sleep, or do any other work...
I had the same thought - the moreso when I reflect on the nil response
The RAS statement seems to have generated quite a bit of media comment:
http://abc.net.au/science/news/space/SpaceRepublish_1466849.htm
Mark Calabretta
ATNF
of a separate TZ rule table.
How is it different from having to keep a total history of leapseconds ?
The table of leapseconds is a function of time but not place.
Mark Calabretta
ATNF
behind the scenes
and do it? Or must we try to represent your arguments for you?
Mark Calabretta
ATNF
daylight saving switches.
Inevitably it also means that the world's timezones would fragment
as adjacent civil administrations adopted disparate policies on timezone
adjustment. And then, as the political map of the world changes, so
the record would become ever more hopelessly complicated.
Mark
, a few well
chosen, specific examples that illustrate the technical aspects of your
argument would be most effective.
Mark Calabretta
ATNF
saleable with an initial timescale of, say,
20 years, extended by 5 years every 5 years. So at any time the
extrapolation would range between 15 and 20 years.
Mark Calabretta
ATNF
be
best to implement procedures to handle this conversion correctly from
the start. Anyway, I agree with your basic point that system time be
maintained in TAI.
Mark Calabretta
ATNF
difficulty in
having systems use TAI internally and maintain a table of leap seconds
for conversion to/from civil time?
Mark Calabretta
ATNF
to adjust your clocks.
http://www.abc.net.au/science/news/enviro/EnviroRepublish_1299077.htm
Mark Calabretta
ATNF
grows quadratically; that is the problem.
Mark Calabretta
ATNF
is 25 SI hours
long, epsilon would be one hour but UTC would still function
properly. Notably, updates to Epsilon would be as infrequent
as ever.
However, the world's timezones, especially those furthest from
Greenwich, would need a modest adjustment - half an hour at most.
Dr. Mark
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