Adelaide's time difference to Melbourne's is due to the fact that it lies further to the west and so is slightly behind in terms of when the sun rises and sets. Broken Hill in New South Wales is also on Adelaide's time zone because it lies so far to the west of that state.
Answer
Australia's time zones are in dire need of overhauling. Adelaide (Central Standard Time) should perhaps be one hour, not half an hour, behind EST. There is a strange time zone on the WA/SA border (right in between WA & SA time, so 45 minutes behind Adelaide time, called Central Western Time, which is semi-official, otherwise sunset would be at 3.30pm in winter.
If it is 3pm in Adelaide, it is 3:30pm in Melbourne.
9:00 Adelaide is half an hour Behind Melbourne
Adelaide is half an hour behind Melbourne time, so it would be 1:30.
The flight is just over an hour long in actual time (remember that Melbourne is half an hour ahead of Adelaide's time.)
Melbourne is almost always a half hour ahead of Adelaide. 9:30 PM Central Standard Time = 10 PM Eastern Standard Time 10:30 PM Central Summer Time = 11 PM Eastern Summer TimeMelbourne is currently half and hour ahead of Adelaide.
1:30 pm
11:30
11:30
Adelaide, the capital of South Australia, is northwest of Melbourne.
It's 1:30 PM CST.
Adelaide is closer.
There are several major routes from Melbourne to Adelaide, but the most logical is the Princes Highway.