Milan is 7.5 hours behind Adelaide
Best overlap: 3:30 PM to 6:30 PM in Adelaide is 8:00 AM to 11:00 AM in Milan.
The sweet spot is 3:30 PM to 6:30 PM Adelaide time, matching 8:00 AM to 11:00 AM in Milan. Milan is 7.5 hours behind Adelaide. That leaves about 3 hours of common time — enough for a meeting or two, so use it deliberately.