Unruh wrote: > [EMAIL PROTECTED] writes: > > >>On Feb 18, 3:41 pm, Unruh <[EMAIL PROTECTED]> wrote: > > >>>NTP time is UTC which assumes 86400 seconds in each and every [[year]] day. >> >>... > > >>My understanding is the opposite: In the UTC time scale, the >>minute, hour, day, week are of variable duration, depending >>on the insertion or deletion of leap seconds. > > >>In the TAI time scale, the minute, hour, day, week are of >>constant duration. > > > No, in UTC all years are 86400 seconds, even if during that year a second > was added or subtracted. Ie, utc retains no memory of leap seconds. Thus a > year with a leap second added has 86400 UTC seconds but 86401 TAI seconds. > UTC simply erases that leap second from memory. It never existed. > > > >>Paul > >
The most interesting thing about leap seconds, as far as I'm concerned, is the fact that the last leap second left the timing world in disarray for about twenty-four hours. Some added a second, a few subtracted a second and some ignored the leap second. It took a long time and, I suspect, considerable manual intervention to get all the clocks synched up again! _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
