[154419] in North American Network Operators' Group
Re: F-ckin Leap Seconds, how do they work?
daemon@ATHENA.MIT.EDU (Tony Finch)
Tue Jul 3 17:51:30 2012
Date: Tue, 3 Jul 2012 22:50:38 +0100
From: Tony Finch <dot@dotat.at>
To: Peter Lothberg <roll@Stupi.SE>
In-Reply-To: <CMM.0.95.0.1341346046.roll@rutten.stupi.se>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Peter Lothberg <roll@Stupi.SE> wrote:
> And I forgot: They made a "mistake" and missed their intentions of a
> solar day year 1900 when defining the atomic second. Off by 2s in 100
> years.
No that is not correct, or at least it's nowhere near as simple as that.
The atomic second was matched to the second of ephemeris time, and that
was based on Newcomb's tables of the sun, which in effect used the average
length of the second from the 1800s.
http://ucolick.org/~sla/leapsecs/dutc.html
Tony.
--
f.anthony.n.finch <dot@dotat.at> http://dotat.at/
Viking, North Utsire, South Utsire: Southeasterly 4 or 5, increasing 6 at
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