Adelaide is 1.5 hours ahead of Beijing
Best overlap: 8:00 AM to 5:00 PM in Beijing is 9:30 AM to 6:30 PM in Adelaide.
For a call that suits both sides, look at 8:00 AM to 5:00 PM in Beijing / 9:30 AM to 6:30 PM in Adelaide. Adelaide is 1.5 hours ahead of Beijing, but the generous 9-hour window means both teams can meet well within their normal day. These times hold for most of the year, but Adelaide's daylight saving (which Beijing doesn't use) shifts them by an hour twice annually.