Difference time between Guinea and Costa Rica in hours, minutes, and seconds is [ +6 hours ] with gregorian date today is Tuesday 16th of December 2025 in Guinean local time, Where the time now in Guinea is 06:54 AM and the time now in Costa Rica is 00:54 AM in Costa Rican local time and the time comparison between Republic of Guinea and Costa Rica in greenwich time ( GMT ) where Guinea advanced about greenwich time ( GMT +00:00 ) while Costa Rica late for greenwich time ( GMT -06:00 ).