Chuck, I guess I did not state my question clearly enough. I would like to confirm this was not an omission in the code to check for condition that can lead to "sys_leap = LEAP_DELSECOND". Searching the code, it seems "sys_leap" can only be LEAP_NOTINSYNC, LEAP_NOWARNING, or LEAP_ADDSECOND.
Thanks, Stephen -----Original Message----- From: Chuck Swiger [mailto:cswi...@mac.com] Sent: Wednesday, March 20, 2013 10:18 AM To: Stephen Yu Cc: questions@lists.ntp.org Subject: Re: [ntp:questions] Leap second question Hi-- On Mar 19, 2013, at 6:15 PM, Stephen Yu wrote: > The question is why "sys_leap = LEAP_ADDSECOND" is unconditional. Is this > based on the prior knowledge that earth always rotates slower? In other word, > could it ever be "sys_leap = LEAP_DELSECOND"? Over the long term, the earth's rotation is slowing over time primarily due to tidal friction from the moon. It's possible for a large-scale event like a big earthquake or meteor strike to increase the earth's rotational speed slightly, but even a ~9.0 richter earthquake resulted in a speedup of only a few milliseconds. Regards, -- -Chuck _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
