Best overlap: 8:30 AM to 9:30 AM in Tehran is 5:00 PM to 6:00 PM in Auckland.
For the smoothest call, aim inside 8:30 AM to 9:30 AM in Tehran, i.e. 5:00 PM to 6:00 PM in Auckland. The overlap barely stretches to 1 hour, so reserve it for what really needs a live conversation and handle the rest async. For part of the year the maths changes: Auckland observes daylight saving, Tehran does not, shifting the overlap by an hour.
| 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 | ||||||||||||||||||||||||
Auckland Pacific/Auckland |
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