Melbourne is 1 hour ahead of Seoul
Best overlap: 8:00 AM to 5:00 PM in Seoul is 9:00 AM to 6:00 PM in Melbourne.
Aim for 8:00 AM to 5:00 PM Seoul time — that's 9:00 AM to 6:00 PM over in Melbourne. Melbourne is 1 hour ahead of Seoul, but you still share a generous 9 hours of overlap, so scheduling is easy and there's room to move a meeting when you need to. These times hold for most of the year, but Melbourne's daylight saving (which Seoul doesn't use) shifts them by an hour twice annually.