Anchorage is 19.5 hours behind Adelaide
Best overlap: 8:00 AM to 2:00 PM in Adelaide is 12:30 PM to 6:30 PM in Anchorage.
If you set up a recurring sync, 8:00 AM to 2:00 PM in Adelaide (12:30 PM to 6:30 PM in Anchorage) is the natural home for it. Because you share 6 hours of the workday, there's no need to compromise; book the time that suits the meeting, not the map. Heads up on dates: Anchorage will show the previous day relative to Adelaide when you meet.