Daniel R. Tobias <[email protected]> wrote: > World time zone maps generally show a series of perfectly regular > time zones divided at the appropriate meridians through the oceans > wherever there aren't any nations that set their time otherwise for > political reasons.
Yup, and these "ocean time zones" are defined apolitically as mean solar time at meridians of longitude equal to integral multiples of 15 degrees. Integral hour offsets from a redefined "UTC" would NOT be an acceptable realization of "civil time at sea" because they would correspond to MST not at the well-defined N*15 deg meridians, but at some other set of meridians wandering around the globe. > However, I suppose on any particular ship it would be up to the > captain to decide when to adjust ship time, not necessarily exactly > when those meridians are crossed. So I guess I should say that integral hour offsets from the ITU2012 form of "UTC" would not be an acceptable realization of "civil time at sea" on *my* ship. :-) Integral hour offsets from UTR generated by one of my rubber duckies would have to be used instead. MS _______________________________________________ LEAPSECS mailing list [email protected] http://six.pairlist.net/mailman/listinfo/leapsecs
