On Thu 2012-01-05T17:40:09 +0000, Zefram hath writ: > I think the point is to have a term for TAI - 35 s, or whatever the > formula ends up being. We'll need to distinguish between these time > scales at least:
but wait, there's more The ATSC-Mobile DTV Standard defines the AT epoch as 1980-01-06T00:00:00 UTC, refers to it as the GPS epoch, and uses the language GPS seconds and GPS time. http://www.atsc.org/cms/standards/a153/a_153-Part-2-2009.pdf And the IEEE 1588 (PTP) uses TAI seconds from an epoch two seconds offset from 1970-01-01 UTC such that PTP time is what is expected as the value of POSIX time_t for a system which wants to use the "right" zoneinfo files. No matter what the ITU-R does later this month there are going to be numerous parallel time scales in use. It's just a question of how many, and how their specification documents will next be rewritten in order to clarify what means what. -- Steve Allen <[email protected]> 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 _______________________________________________ LEAPSECS mailing list [email protected] http://six.pairlist.net/mailman/listinfo/leapsecs
