Re: Problems with GLONASS Raw Receiver Data at Start of New Year

2006-01-17 Thread Steve Allen
On Tue 2006-01-17T18:26:49 +0100, Poul-Henning Kamp hath writ:
 As far as I recall GLONASS was messed up for hours on the previous
 leapsecond, so there is a good chance it is because of the leap
 seconds that it fell out this time.

Not according to the Russians:

There was a NAGU at the time of the mid 1997 leap second

but the text clearly indicates it was not because of the leap second.

Of course the Russian GLONASS operators could be in denial about leap
second issues.  They wouldn't be the only ones with that condition.

UCO/Lick ObservatoryNatural Sciences II, Room 165Lat  +36.99858
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Re: Monsters from the id

2006-01-17 Thread Mark Calabretta
On Mon 2006/01/16 00:40:28 CDT, John Cowan wrote

I realize the ALHP has severe problems with this, but I don't approve
of the ALHP anyhow (save perhaps tactically, as explained).


But does anyone think that the leap hour proposal is anything other than
a political device?  If so, please describe in detail how it could/would

Mark Calabretta

Re: Monsters from the id

2006-01-17 Thread Neal McBurnett
On Sat, Jan 14, 2006 at 02:09:20AM -0700, Rob Seaman wrote:
On Jan 13, 2006, at 12:46 AM, John Cowan wrote:
  In the end, it will be impossible to maintain the notion that a solar
  day is 24h of 60m of 60s each: we wind up, IIRC, with the solar day
  and lunar month both at about 47 current solar days.

There's a lot of difference between what happens over a billion years
and a million years.  Length of day increases only about 20s per million
years.  Should we be here to care in a million years, only a 1/4 of 1/10
one percent tweak to the length of the civil second would suffice to
our Babylonian clock paradigm to continue in use.

Of course, since there is a future time of equilibrium (though a long
time off...), the quadratic nature of the accumulation of leap
seconds will also stop at some point, and eventually we won't need
them any more.  I hope the 47 day calculation takes the solar tidal
influences into effect, and that the moon has to overcome that.

It makes me wonder when the maximum rate of change in length of day
will come?  Not that we need to plan for events that far in the future
- just some fun astronomy

Neal McBurnett
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