Best overlap: 4:00 PM to 6:00 PM in Shanghai is 8:00 AM to 10:00 AM in Edinburgh.
Schedule calls for 4:00 PM to 6:00 PM in Shanghai — your colleagues in Edinburgh will be online from 8:00 AM to 10:00 AM. Since Edinburgh is 8 hours behind Shanghai, the overlap is narrow (about 2 hours); a single, well-protected slot beats hunting for time each week. Finally, Edinburgh observes daylight saving and Shanghai doesn't, so this window shifts by an hour for part of the year — recheck it each spring and autumn.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Shanghai Asia/Shanghai | ||||||||||||||||||||||||
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. -