Oslo is 8 hours behind Melbourne
Best overlap: 4:00 PM to 6:00 PM in Melbourne is 8:00 AM to 10:00 AM in Oslo.
The sweet spot is 4:00 PM to 6:00 PM Melbourne time, matching 8:00 AM to 10:00 AM in Oslo. Because Oslo is 8 hours behind Melbourne, the shared window is only about 2 hours. A fixed slot at 4:00 PM in Melbourne (8:00 AM in Oslo) saves a lot of back-and-forth.