[LEAPSECS] Common Calendar Time (CCT) -Brooks Harris

Zefram zefram at fysh.org
Fri Jan 17 20:15:31 EST 2014


Brooks Harris wrote:

>A) If you establish a new timescale that includes the "Leap Seconds

>mechanism" you'd better rename it to make it clear its part of this

>new timescale, not some other.


Your proleptic extension of UTC certainly needs a name distinct from
"UTC", yes. That doesn't argue for renaming leap seconds. Rather, if
you're using the same mechanism, better to keep the same terminology to
describe the mechanism.


>That is not "Leap Seconds" proper. Better rename it.


The only difference in the mechanism is that you're determining the leaps
retrospectively rather than contemporaneously. The proleptic leaps in
your extended UTC will look just the same as the UTC leaps in the 1970s
look now.


>C) The CCT timescale will need to define clear rules how "Leap

>Seconds" apply to "local time". This is not addressed by the existing

>"Leap Seconds" definition(s).


There is a perfectly well-defined system for combining leap seconds
with timezones. Changing it would not be wise.

-zefram


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