Re: [PLUG] Calculating the correct UTC time

["William H. Magill" <magill@mcgillsociety.org>]

On 03 Aug, 2004, at 10:22, Mike Chirico wrote:
> My question is -- does anyone know of any open source packages that 
> will
> give the correct UTC time, both going forward with the best 
> approximation of
> when leap seconds will be added, plus, the exact time for all seconds, 
> going
> back to 1972?  By the way is data is available at the following link:
> ftp://maia.usno.navy.mil/ser7/tai-utc.dat

I suspect that what you want may be buried at www.ntp.org

... or at least there used to be a TON of time related (theoretical 
type) stuff that wasn't explicitly NTP -- before the pages were 
reorganized a couple of years ago. [It might only be visible from the 
ftp server - ftp.udel.edu/pub/ntp/ ]

See the links page. Maybe at NIST.

Generally speaking the leap seconds are "flagged" and broadcast by the 
various official clocks, and they are then read from them. I don't know 
that any of the various time programs do any calculation of "when" to 
create them. They just process the coded time signal.

The Twiki might also be useful.


T.T.F.N.
William H. Magill
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magill@mcgillsociety.org
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