Hong Kong is 2 hours behind Melbourne
Best overlap: 10:00 AM to 6:00 PM in Melbourne is 8:00 AM to 4:00 PM in Hong Kong.
For a call that suits both sides, look at 10:00 AM to 6:00 PM in Melbourne / 8:00 AM to 4:00 PM in Hong Kong. Hong Kong is 2 hours behind Melbourne, but the generous 8-hour window means both teams can meet well within their normal day. These times hold for most of the year, but Melbourne's daylight saving (which Hong Kong doesn't use) shifts them by an hour twice annually.