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Re: Leap second today
From: Gary LaPook
Date: 2012 Jul 1, 16:03 -0700

That is your choice but if you think you need the additional accuracy available by correcting UTC to UT1 then the needed correction information is available on WWV.
http://fer3.com/arc/m2.aspx/Leap-second-today-LaPook-jun-2012-g19804

gl

--- On Sun, 7/1/12, Robert Bernecky <bernecky@sbcglobal.net> wrote:

From: Robert Bernecky <bernecky@sbcglobal.net>
Subject: [NavList] Re: Leap second today
To: NavList@fer3.com
Date: Sunday, July 1, 2012, 3:13 PM

Geoffrey explains it well. But in practice we all use UTC, and as you explain UT1 (what NA uses) drifts from UTC. So in that context (when users insist on using the wrong time standard) the NA is "more wrong" without a leap second.
There is no leap second inserted into the NA, but it does need UT1 which does not change in a predictable way, and so the NA must use a "best guess" on how UT1 will change in the following year.
Has anyone seen this? Apparently the leap second did cause problems.
http://www.news.com.au/travel/news/leap-second-crashes-qantas-and-leaves-passengers-stranded/story-e6frfq80-1226413961235
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