Difference time between French Guiana and Japan in hours, minutes, and seconds is [ -12 hours ] with gregorian date today is Thursday 1st of January 2026 in French Guianese local time, Where the time now in French Guiana is 00:51 AM and the time now in Japan is 12:51 PM in Japanese local time and the time comparison between French Guiana and Japan in greenwich time ( GMT ) where French Guiana late for greenwich time ( GMT -03:00 ) while Japan advanced about greenwich time ( GMT +09:00 ).