Difference time between Guinea Bissau and Macao in hours, minutes, and seconds is [ -8 hours ] with gregorian date today is Thursday 21st of May 2026 in Guinea Bissauan local time, Where the time now in Guinea Bissau is 05:49 AM and the time now in Macao is 13:49 PM in Macanese local time and the time comparison between Republic of Guinea-Bissau and Macao in greenwich time ( GMT ) where Guinea Bissau advanced about greenwich time ( GMT +00:00 ) while Macao advanced about greenwich time ( GMT +08:00 ).