Nov. 27, 2012
1:28 a.m.
As I understand it Google is running NTP, slightly modified to smear, according to the equation lie(t) = (1.0 - cos(pi * t / w)) / 2.0 where Google doesn't say what they're using for w. For more on this, please see: Pascoe C. Time, technology and leaping seconds. Google Official Blog 2011-09-15 <http://googleblog.blogspot.com/2011/09/time-technology-and-leaping-seconds.h...> As far as I know this sort of leap-second munging was first proposed by Markus Kuhn in 2005. Kuhn has compared his proposal to what Google is doing. Please see: Kuhn M. UTC with Smoothed Leap Seconds (UTC-SLS). 2005-12-14, last modified 2011-09-15 <http://www.cl.cam.ac.uk/~mgk25/time/utc-sls/>