Best overlap: 12:00 PM to 6:00 PM in Tehran is 8:30 AM to 2:30 PM in Manchester.
Your shared working hours run 12:00 PM to 6:00 PM in Tehran (8:30 AM to 2:30 PM in Manchester). Scheduling is forgiving here: with 6 hours of overlap, a missed slot just means picking another one the same day. Heads up: because Manchester changes its clocks and Tehran doesn't, the difference moves by an hour twice a year. Confirm the overlap around the DST switch.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Tehran Asia/Tehran | ||||||||||||||||||||||||
Manchester 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. -