> It sounds like having a second lookup table for the Australian rules is
> a possibility, and this sounds fairly reasonable to me. Btw, is there an
> Australian convention for referring to North American time zones for
> those zones with naming conflicts?
No.
Named timezones just lose. For those of us who use machines on both
the Australian and USA East coasts it's nearly useless to see "EST":
Thu Jun 14 19:54:01 EST 2001
Regards,
Giles