Difference time between Guinea Bissau and Sierra Leone in hours, minutes, and seconds is [ ] with gregorian date today is Saturday 25th of October 2025 in Guinea Bissauan local time, Where the time now in Guinea Bissau is 04:49 AM and the time now in Sierra Leone is 04:49 AM in Sierra Leonean local time and the time comparison between Republic of Guinea-Bissau and Sierra Leone in greenwich time ( GMT ) where Guinea Bissau advanced about greenwich time ( GMT +00:00 ) while Sierra Leone he has the same greenwich time ( GMT +00:00 ).