Adelaide is 7.5 hours ahead of Copenhagen
Best overlap: 8:00 AM to 11:00 AM in Copenhagen is 3:30 PM to 6:30 PM in Adelaide.
If you set up a recurring sync, 8:00 AM to 11:00 AM in Copenhagen (3:30 PM to 6:30 PM in Adelaide) is the natural home for it. Adelaide is 7.5 hours ahead of Copenhagen, leaving about 3 hours of daily overlap — enough for most meetings if you don't leave them too late in the day.