San Diego is 16.5 hours behind Adelaide
Best overlap: 8:00 AM to 11:00 AM in Adelaide is 3:30 PM to 6:30 PM in San Diego.
Your window to reach both cities is 8:00 AM to 11:00 AM in Adelaide, which converts to 3:30 PM to 6:30 PM in San Diego. San Diego is 16.5 hours behind Adelaide, leaving about 3 hours of shared hours — plan recurring calls early in that window to leave buffer. Just remember San Diego sits on the previous day during this window, so double-check which calendar day you're booking.