Best overlap: 8:00 AM to 10:00 AM in Edinburgh is 4:00 PM to 6:00 PM in Hong Kong.
Both teams are at their desks between 8:00 AM to 10:00 AM in Edinburgh and 4:00 PM to 6:00 PM in Hong Kong. The shared window is only 2 hours — treat 8:00 AM in Edinburgh (4:00 PM in Hong Kong) as the one fixed point and plan everything else around it. The difference isn't constant year-round: Edinburgh adjusts for daylight saving while Hong Kong holds steady.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Edinburgh Europe/London | ||||||||||||||||||||||||
Hong Kong Asia/Hong Kong |
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. -