Jakarta is 2.5 hours behind Adelaide
Best overlap: 10:30 AM to 6:30 PM in Adelaide is 8:00 AM to 4:00 PM in Jakarta.
Plan around 10:30 AM to 6:30 PM in Adelaide, which is 8:00 AM to 4:00 PM in Jakarta, to catch everyone during office hours. Jakarta is 2.5 hours behind Adelaide, but you'd hardly notice — 8 hours of shared hours makes this feel like working in neighbouring time zones. Don't be caught out by clock changes — Adelaide observes daylight saving and Jakarta doesn't, so the offset varies by an hour through the year.