Difference time between Iran and Japan in hours, minutes, and seconds is [ -5 hours -30 minutes ] with gregorian date today is Sunday 14th of December 2025 in Iranian local time, Where the time now in Iran is 04:47 AM and the time now in Japan is 10:17 AM 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 ).