[ntp:questions] Leap second to be introduced in June

Harlan Stenn stenn at ntp.org
Tue Jan 13 00:25:04 UTC 2015

Marco Marongiu writes:
> On 12/01/15 06:10, William Unruh wrote:
> > I also admit I do not know how windows impliments leap
> > seconds. 
> I don't have a reference, but I remember that at the time of the latest
> leap second I read that Windows will half the clock speed at 23:59:59 so
> that it reaches 00:00:00 at the right time. It pays the price of being
> wrong for two seconds in order to save the system from a discontinuity.
> But again, I read it in 2012 somewhere I don't have a reference of, and
> things may have changed since then.

The last I saw the unix kernel implements the leap second over 1 second
of time, and the Windows kernel does this over 2 seconds' time.  I
recall seeing some whitepapers about this but I won't be able to look
for a while...


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