Here's something I missed until today: CCTF/09-38 http://www.bipm.org/cc/CCTF/Allowed/18/CCTF_09-38_CGPM-ITU-resp.pdf the CIPM advises the 24th CGPM that henceforth the CGPM should assume responsibility for the definition of international time scales while the ITU continues its intergovernmental regulatory activities regarding the radio dissemination of precise time and frequency signals
that lives alongside CCTF/09-37 http://www.bipm.org/cc/CCTF/Allowed/18/CCTF_09-37_UTC_possible_redefinition.pdf which recommended that the ITU-R get the UTC process concluded National and international agencies concerned with the definition of international time scales urgently consider decisions regarding the future definition of UTC so that international agreement can be reached as early as possible. and CCTF/09-27 http://www.bipm.org/cc/CCTF/Allowed/18/CCTF_09-27_note_on_UTC-ITU-R.pdf which was submitted to ITU-R SG7A in 2007-09 and which said The CCTF realizes that some misunderstanding exists regarding the scope of application of the various time scales. It stresses that TAI is the uniform time scale underlying UTC, and that it should not be considered as an alternative time reference. which is contrary to ruminations from a decade earlier when some CCTF members opined that folks who don't like leap seconds should use TAI, and, the other kicker for folks like the perl developers who want to specify TAI as an underlying API 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. A lot of the correspondence regarding recommendations seems to consist of requests for some agency to revise or suppress some document which encroaches on the territory of another. Unfortunately for the sake of system implementors the agencies are still engaged in the negotiations about where the boundaries are. -- 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
