Difference time between Guinea Bissau and Serbia in hours, minutes, and seconds is [ -1 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 Serbia is 01:38 AM in Serbian local time and the time comparison between Republic of Guinea-Bissau and Serbia in greenwich time ( GMT ) where Guinea Bissau advanced about greenwich time ( GMT +00:00 ) while Serbia advanced about greenwich time ( GMT +02:00 ).