
与原子钟同步的精确时间(IANA + NTP)
Friday, May 15, 2026
Iran · Asia/Tehran · GMT+3:30
Tehran 比 London 早 2.5 小时

与原子钟同步的精确时间(IANA + NTP)
Friday, May 15, 2026
Iran · Asia/Tehran · GMT+3:30

与原子钟同步的精确时间(IANA + NTP)
Thursday, May 14, 2026
United Kingdom · Europe/London · GMT+1
If you are scheduling a call between Tehran and London, the overlap window is limited to typical business hours. When it is 11 am in Tehran it is 9 am in London — a workable window for scheduling. The latest reasonable overlap is around 5 pm in Tehran (2 pm in London). Outside this window there is effectively no good overlap for regular office hours.
Scheduling a family call between Tehran and London takes a little planning. Tehran is 2.5 hours ahead of London, which means there's no window that feels comfortable for everyone at the same time. The most manageable option is early evening in Tehran — around 7 pm — which puts London at 4:30 pm. Someone will need to stretch a little, but at least no one's setting a middle-of-the-night alarm. Weekends tend to give the most flexibility if you can agree on a time in advance.
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