Miami is 7.5 hours behind Tehran
Best overlap: 3:30 PM to 6:30 PM in Tehran is 8:00 AM to 11:00 AM in Miami.
Schedule calls for 3:30 PM to 6:30 PM in Tehran — your colleagues in Miami will be online from 8:00 AM to 11:00 AM. Miami is 7.5 hours behind Tehran, which gives you a solid 3-hour window. Book earlier in it and neither side is rushing. These times hold for most of the year, but Miami's daylight saving (which Tehran doesn't use) shifts them by an hour twice annually.