Difference time between Guinea Bissau and Yemen in hours, minutes, and seconds is [ -3 hours ] with gregorian date today is Saturday 21st of March 2026 in Guinea Bissauan local time, Where the time now in Guinea Bissau is 00:38 AM and the time now in Yemen is 03:38 AM in Yemeni local time and the time comparison between Republic of Guinea-Bissau and Yemen in greenwich time ( GMT ) where Guinea Bissau advanced about greenwich time ( GMT +00:00 ) while Yemen advanced about greenwich time ( GMT +03:00 ).