nanog mailing list archives
Re: F-ckin Leap Seconds, how do they work?
From: Steve Allen <sla () ucolick org>
Date: Thu, 5 Jul 2012 10:42:49 -0700
On Thu 2012-07-05T10:26:22 -0700, Roy hath writ:
Lets see. There have been nine leap seconds in 20 years. So at the start of the next century the difference will probably be less than a minute
There is no predicting how large the decadal variations in LOD will be, but the difference should be somewhere between 1 minute and 3 minutes. Please see these charts and tables for how unpredictable it is. http://www.ucolick.org/~sla/leapsecs/dutc.html
Remember OpenTime is only for people who want their system clocks to ignore leap seconds. I don't include myself among the possible users of OpenTime.
Anyone who needs that can already do that using existing, deployed, and tested code and hardware and the GPS system time scale. Please see this worked example. Please do not invent yet another private time scale. http://www.ucolick.org/~sla/leapsecs/right+gps.html -- Steve Allen <sla () ucolick org> WGS-84 (GPS) UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855 1156 High Street Voice: +1 831 459 3046 Lng -122.06015 Santa Cruz, CA 95064 http://www.ucolick.org/~sla/ Hgt +250 m
Current thread:
- Re: F-ckin Leap Seconds, how do they work?, (continued)
- Re: F-ckin Leap Seconds, how do they work? Richard Irving (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Owen DeLong (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Jared Mauch (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Owen DeLong (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Majdi S. Abbas (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Roy (Jul 04)
- Re: F-ckin Leap Seconds, how do they work? Peter Kristolaitis (Jul 04)
- Re: F-ckin Leap Seconds, how do they work? Roy (Jul 04)
- Re: F-ckin Leap Seconds, how do they work? Peter Lothberg (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Roy (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Steve Allen (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Roy (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Tyler Haske (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Eugen Leitl (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Eugen Leitl (Jul 05)