Zefram <[email protected]> wrote: > > You show your "Earth Correction" being a constant 10 s prior to > 1972, and following the TAI-UTC difference thereafter. This makes a > poor correction. If the intent is to define a proleptic version of > modern UTC, you need to decide on dates for proleptic leap seconds.
For instance, http://fanf.livejournal.com/69586.html > >I'll suggestion a name for this scale - "Local Time Offset (LTO)". > > Decent name, and it can be fairly applied to the offsets that we already > manage, independent of the CCT concept. I'm slightly surprised that there doesn't seem to be a convenional terse phrase for this already - ISO 8601 just uses circumlocutions like "difference between local time and UTC of day". > >Local Time Offset declares 104 offsets from CCT on 15 minute > >increments from CCT-12:00 to CCT+14:00. > > You will not in practice succeed in dictating a limit to either the > range or the resolution of local time offsets. Each locality decides > its time for itself; there is no authority that can dictate otherwise. 15 minute intervals are not fine-grained enough for historical zones that followed local mean solar time. The range of offsets has been surprisingly large in the past, e.g. the Philippines / Manila on -15:56 until 1844 after which they crossed the date line and switched to +08:04. Tony. -- f.anthony.n.finch <[email protected]> http://dotat.at/ Forties, Cromarty: East, veering southeast, 4 or 5, occasionally 6 at first. Rough, becoming slight or moderate. Showers, rain at first. Moderate or good, occasionally poor at first. _______________________________________________ LEAPSECS mailing list [email protected] http://six.pairlist.net/mailman/listinfo/leapsecs
