Adelaide is 5.5 hours ahead of Islamabad
Best overlap: 8:30 AM to 12:30 PM in Islamabad is 2:00 PM to 6:00 PM in Adelaide.
Shoot for 8:30 AM to 12:30 PM in Islamabad; your Adelaide colleagues will see that as 2:00 PM to 6:00 PM. Adelaide is 5.5 hours ahead of Islamabad, so the practical overlap is about 4 hours — generous enough for meetings, tight enough to be worth booking ahead. Don't be caught out by clock changes — Adelaide observes daylight saving and Islamabad doesn't, so the offset varies by an hour through the year.