[ntp:questions] National time standard differences
David J Taylor
david-taylor at blueyonder.delete-this-bit.and-this-part.co.uk.invalid
Tue Feb 9 15:47:10 UTC 2010
"Richard B. Gilbert" <rgilbert88 at comcast.net> wrote in message
news:NKKdnYaE0NZW5-zWnZ2dnUVZ_uli4p2d at giganews.com...
> David J Taylor wrote:
>> Most likely asymmetrical paths, yes. To answer your implied question,
>> it is most /unlikely/ that the USA National Time is 17 milliseconds
>> away from Japan National Time, if that's what you were thinking.
>> National time differences are likely to be microseconds or less, I
> I believe that the word "less" is appropriate here but might be called
> an understatement. I'd guess that the various national time standards
> are within nanoseconds or less.
Thanks for the update, Terje and Richard. You must need more digits in
the NTP billboard display, then! <G>
I remember the flying of caesium or other atomic clocks round the world,
and that folks had to invoke relativistic corrections. Were these better
than microseconds as well?
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