On Fri 2011-01-28T10:34:14 -0800, Steve Allen hath writ: > On Fri 2011-01-28T18:03:07 +0000, Stephen Colebourne hath writ: > > JSR-310 addresses the definition of 1970-01-01Z (by defining the > > TAI-UTC gap as fixed at 10 seconds prior to 1972.
> All proleptic time scales are dangerous, for in the absence of a > contemporary authority to define what they were, any one > interpretation is likely to differ from another. And it looks as if writing TAI into a standard which is expected to be useful in the future is also a mistake. As seen at http://www.ucolick.org/~sla/leapsecs/timescales.html#TAI on 2007-09-04/05 The BIPM contributed document 7A/51-E to the ITU-R WP7A meeting regarding Question ITU-R 236/7. The final sentence of the BIPM document reads: In the case of a redefinition of UTC without leap seconds, the CCTF would consider discussing the possibility of suppressing TAI, as it would remain parallel to the continuous UTC. This makes it unclear whether TAI will continue to exist. -- Steve Allen <[email protected]> WGS-84 (GPS) UCO/Lick Observatory Natural Sciences II, Room 165 Lat +36.99855 University of California 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
