Difference time between Guinea Bissau and Brunei Darussalam in hours, minutes, and seconds is [ -8 hours ] with gregorian date today is Thursday 11th of September 2025 in Guinea Bissauan local time, Where the time now in Guinea Bissau is 22:18 PM and the time now in Brunei Darussalam is 06:18 AM in Bruneian local time and the time comparison between Republic of Guinea-Bissau and Brunei Darussalam in greenwich time ( GMT ) where Guinea Bissau advanced about greenwich time ( GMT +00:00 ) while Brunei Darussalam advanced about greenwich time ( GMT +08:00 ).