Melbourne is 8 hours ahead of Barcelona
Best overlap: 8:00 AM to 10:00 AM in Barcelona is 4:00 PM to 6:00 PM in Melbourne.
The sweet spot is 8:00 AM to 10:00 AM Barcelona time, matching 4:00 PM to 6:00 PM in Melbourne. The overlap is tight at roughly 2 hours, so protect it: 8:00 AM in Barcelona / 4:00 PM in Melbourne is your safest recurring slot.