IMHO: Best way is to listen to WWV (or whatever radio clock you can hear in your area). I have listened to every leap second since Dec 2005.
But as for "watching", few (none?) of the Unix time tools will ever show ":60" although this could change if/when Unix time switches to TAI and localtime pays attention to leapseconds. Some GPS Refclocks will send the string ":60" and with the right ntpd options you can log every message. As for watching on a real clock, "How to Watch A Leap Second" is your friend: http://leapsecond.com/notes/leap-watch.htm If you're out in the wilderness hiking when the leap second ticks over that doesn't mean you have to miss seeing it. You could just take along your atomic watch, or look for a fellow hiker wearing his along the trail: http://www.leapsecond.com/pages/atomic-bill/ Tim. ________________________________________ From: [email protected] [[email protected]] On Behalf Of AlbyVA [[email protected]] Sent: Tuesday, March 20, 2012 5:24 PM To: Anssi Johansson Cc: [email protected] Subject: Re: [Pool] Question on Leap Second. Any way to log and/or watch the leap second change on June 30th @ 23:59:60 UTC as the seconds count down? I don't think any of the clockstats, peerstats, loopstats are logging anything every second. I just want to watch something leap (1) second. On Tue, Mar 20, 2012 at 4:59 PM, Anssi Johansson <[email protected]<mailto:[email protected]>> wrote: [email protected]<mailto:[email protected]> kirjoitti: Hi, The next leap second is due to be added on 30 June 2012. I wanted to check with the NTP user community if there are any known issues running NTP version 4.2.6 on stratum 2 NTP servers. Hi, as far as I know, there are no problems with the leap second handling in that version of ntpd, or in any relatively recent version of ntpd. You may want to read http://support.ntp.org/bin/view/Support/ConfiguringNTP#Section_6.14. for further information. As for me, the last time the leap second occurred, my stratum 2 server picked up the leap second information from a stratum 1 server just fine. I didn't need to do any changes to my configuration. I think I was running 4.2.2 (or earlier) at that time. I probably won't bother doing any changes to my configuration this time either. You can check the leap second status with the command ntpq -c rv, search for "leap" in the output. As far as I can see, the leap second indicator is transmitted only on the last day of June (or December), so at this moment you shouldn't find any NTP servers indicating that a leap second is going to occur. In other news, David's link worked just fine for me. _______________________________________________ pool mailing list [email protected]<mailto:[email protected]> http://lists.ntp.org/listinfo/pool _______________________________________________ pool mailing list [email protected] http://lists.ntp.org/listinfo/pool
