Best overlap: 4:00 PM to 6:00 PM in Perth is 8:00 AM to 10:00 AM in Edinburgh.
Aim for 4:00 PM to 6:00 PM Perth time — that's 8:00 AM to 10:00 AM over in Edinburgh. There's just 2 hours of overlap here, so don't leave meetings to chance — lock 4:00 PM in Perth / 8:00 AM in Edinburgh into the calendar. Because Edinburgh and Perth don't both observe daylight saving, plan to re-check the overlap around March and November.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Perth Australia/Perth | ||||||||||||||||||||||||
Edinburgh Europe/London |
London to New York is five hours apart, except for the five weeks a year when it isn't. Exact overlap windows for every US zone, the 2026 DST mismatch dates, and where to put the recurring sync. -
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. -