> There are in fact names for all the integral-hour time zones.  UTC s
of course "UTC". THe time zones from UTC-1 to UTC-12 are named
"Etc/GMT+1" to "Etc/GMT+12", and the time zones from UTC+1 to UTC+14
are named "Etc/GMT-1" to "Etc/GMT-14".  The reversal of signs reflects
Posix conventions.

I see. They are also reflected in CLDR. I will add the systematic name
as a requirement for such timezones.

-- Peter McGoron