Difference time between Guinea and Sao Tome and Principe in hours, minutes, and seconds is [ ] with gregorian date today is Wednesday 19th of August 2026 in Guinean local time, Where the time now in Guinea is 21:34 PM and the time now in Sao Tome and Principe is 21:34 PM in Sao Tomean local time and the time comparison between Republic of Guinea and Sao Tome and Principe in greenwich time ( GMT ) where Guinea advanced about greenwich time ( GMT +00:00 ) while Sao Tome and Principe he has the same greenwich time ( GMT +00:00 ).