Anchorage is 12.5 hours behind Tehran
There is no standard 8-to-6 overlap. Someone joins early or late.
With 12.5 hours between them, Tehran and Anchorage have no overlap during standard business hours — by the time one team logs on, the other has logged off. The usual fix is an early start for Anchorage or a late finish for Tehran — pick whichever team has more flexibility. The difference isn't constant year-round: Anchorage adjusts for daylight saving while Tehran holds steady.