Difference time between Iran and Japan in hours, minutes, and seconds is [ -4 hours -30 minutes ] with gregorian date today is Thursday 10th of September 2026 in Iranian local time, Where the time now in Iran is 12:21 PM and the time now in Japan is 16:51 PM in Japanese local time and the time comparison between Islamic Republic of Iran and Japan in greenwich time ( GMT ) where Iran advanced about greenwich time ( GMT +04:30 ) while Japan advanced about greenwich time ( GMT +09:00 ).