Best overlap: 3:00 PM to 6:00 PM in Perth is 8:00 AM to 11:00 AM in London.
Keep meetings inside 3:00 PM to 6:00 PM in Perth — that maps to 8:00 AM to 11:00 AM in London. London is 7 hours behind Perth, which gives you a solid 3-hour window. Book earlier in it and neither side is rushing. Remember that London shifts for daylight saving and Perth doesn't, so recalculate the overlap after each clock change.
| 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 | ||||||||||||||||||||||||
London Europe/London |
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. -
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