Tehran is 1.5 hours ahead of Prague
Best overlap: 8:00 AM to 5:00 PM in Prague is 9:30 AM to 6:30 PM in Tehran.
Your window to reach both cities is 8:00 AM to 5:00 PM in Prague, which converts to 9:30 AM to 6:30 PM in Tehran. You won't be short on options — 9 hours of overlap leaves space for recurring syncs and ad-hoc calls alike. Bear in mind Prague shifts for daylight saving while Tehran stays fixed — recheck these hours after each clock change.