Difference time between Guinea Bissau and Japan in hours, minutes, and seconds is [ -9 hours ] with gregorian date today is Friday 2nd of October 2026 in Guinea Bissauan local time, Where the time now in Guinea Bissau is 23:23 PM and the time now in Japan is 08:23 AM in Japanese local time and the time comparison between Republic of Guinea-Bissau and Japan in greenwich time ( GMT ) where Guinea Bissau advanced about greenwich time ( GMT +00:00 ) while Japan advanced about greenwich time ( GMT +09:00 ).