very much need to know and agree what time it is.
Yes but mostly only to an accuracy of minutes.
-paul
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-Original Message-
From: Poul-Henning Kamp p...@phk.freebsd.dk
Sender: leapsecs-boun...@leapsecond.com
Date: Fri, 10 Dec 2010 18:42:42
Just because we can't immediately see a reason, does not mean
that there is none. A lot will change in 100 years that even
the venerable PHK cannot foresee.
So far, astronomers have messed with our timekeeping at least once
every 20 years for the last 200 years, so I do think we have the
Rob ... you're absolutely right. Eliminating leap seconds WOULD
introduce a secular trend ... IF (and here's the part I haven't convinced
you about yet) no other means for compensating for it is implemented,
FOREVER AND EVER.
The Pisa architects are in a meeting:
Let us not worry
to scrap leap seconds.
-paul
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-Original Message-
From: Poul-Henning Kamp p...@phk.freebsd.dk
Sender: leapsecs-boun...@leapsecond.com
Date: Wed, 03 Nov 2010 00:33:56
To: Leap Second Discussion Listleapsecs@leapsecond.com
Reply-To: Leap Second Discussion
it will be necessary to modify all [...]
Why?
It will also be necessary to. modify
all computer programs which keep civil time [...]
Examples of such programs with a material manifestation of a problem?
-paul
Sent from my BlackBerry® by Boost Mobile
-Original Message-
From:
There is merely a reexamination of the
presumption that DUT1 has to be kept
to less than 0.9 seconds,
The questionaire of the US itc did not sound like
this. It sounded every bit like a scrapping of
leap seconds altogether.
Let's get quantitative. What magnitude of
DUT1 would be
on the SAME time. Nobody cares here that solar time and civil time
are 43 minutes off.
*I* care
but I'm not important - I'm just one person
many people might care and many people are not getting to make
the decision because the decision is being made for them.
further, it's not a
Don't disregard ITU totally here. ITU-T has UTC written into the
standards for cross-TelCo billing interfaces/protocols.
...all the implementations of those standards just use unix time.
-paul
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UTC cannot exist without [...]
All this talk of GMT/UTC/Legislature makes me ask how the world
currently syncs their time.
In the case of SMS networks - they use NTP or nothing.
In the case of in-house business systems - they use NTP or nothing.
In the case of Internet hosts - DNS/SMTP
If, for sake of discussion, we view TAI as correct, then according to HP
Application Note 1289, The Science of Timekeeping, D. W. Allen, N. Ashby,
and C. C. Hodge, the irregularities in the rotation of the earth are at
the level of 1.5 × 10^-9 (page 20). Frequency transfer using HF radio
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