- have an option to pick one TZ to
be at the "12 o'clock" position
(click on the hour hand of a TZ
to rotate the whole clock so that
TZ is a the top)
- then a TZ is selected, show time
deltas on the other TZs' hour hands
- allow arbitrary rotations so one
can place any particular hour at
the "12 o'clock" position
Suggestion: