Best overlap: 8:00 AM to 10:00 AM in Edinburgh is 4:00 PM to 6:00 PM in Shenzhen.
Book within 8:00 AM to 10:00 AM Edinburgh time (4:00 PM to 6:00 PM in Shenzhen) and both teams will be at work. Shenzhen is 8 hours ahead of Edinburgh, so common hours are scarce (about 2 hours). Lock the slot, keep it short, and follow up in writing. Note that Edinburgh follows daylight saving while Shenzhen stays put, so the times above drift by an hour seasonally.
| 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 | ||||||||||||||||||||||||
Shenzhen Asia/Shanghai |
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. -