On 2015-01-19, Mike S <[email protected]> wrote: > On 1/18/2015 6:04 PM, William Unruh wrote: > >> UTC always has 86400 seconds per year. > > You clearly don't understand how leap seconds work. You're embarrassing > yourself now. When there's a leap second, there are 86401 SI seconds in
I AM clearly embarrasing myself, since 86400 is the number of seconds per SAY not year. Slight difference! Of course there are 86401 seconds in a day including a leap second. But UTC only sees 86400. It forgets about one of them. > that year, that's the whole point. You may also be interested to learn > that a year with the similarly named leap day has 366 days, not the > usual 365. > >> Note UTC differs from TAI by an interger number of seconds, AND that >> integer changes with the leap second. Ie, it cannot be continuous if TAI >> is continuous. I quoted from the document you yourself pointed me at. TAI is continuous. UTC differes from TAI by and interger number of seconds, and that integer changes when a leap second occurs. If x is continous x-n where n changes at some time, is NOT continuous. > > Nonsense. When there's a leap second, there's a UTC second numbered > 23:59:60, ibid. Both UTC and TAI tick forward constantly, with each new > second uniquely enumerated. > >> TAI is monotonic and continuous. UTC thus cannot be. > > Now there's a non-sequitur. _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
