Best overlap: 10:00 AM to 6:00 PM in Melbourne is 8:00 AM to 4:00 PM in Perth.
The hours that work for both Melbourne and Perth are 10:00 AM to 6:00 PM (Melbourne) and 8:00 AM to 4:00 PM (Perth). Perth is 2 hours behind Melbourne, yet you get a full 8 hours of shared hours — enough to schedule around lunches, focus time, and preferences with ease. Note the seasonal wrinkle: when Melbourne is on daylight saving and Perth isn't, the gap between them grows or shrinks by an hour.
| Local time | 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Melbourne Australia/Melbourne | ||||||||||||||||||||||||
Perth Australia/Perth |
The US to Australia gap runs 14 to 19 hours depending on the month, and someone is always in tomorrow. Exact overlap windows for every US coast, the double-DST trap, and a rotation rule that keeps it fair. -