I think it's only 2 hours difference, unless Perth has daylight savings.
If you email me charry ([email protected])I have more contact numbers for AK - otherwise I'd go for the preference of phoning Graves NOW - which will give you his lunch time. (approx)
If you take the number off the announcements (OPL) but dial 0014 instead of 0011 first, it's a very cheap call.