Difference time between Guinea and Japan in hours, minutes, and seconds is [ -9 hours ] with gregorian date today is Saturday 20th of September 2025 in Guinean local time, Where the time now in Guinea is 10:42 AM and the time now in Japan is 19:42 PM in Japanese local time and the time comparison between Republic of Guinea and Japan in greenwich time ( GMT ) where Guinea advanced about greenwich time ( GMT +00:00 ) while Japan advanced about greenwich time ( GMT +09:00 ).