Difference time between Guinea and Singapore in hours, minutes, and seconds is [ -8 hours ] with gregorian date today is Friday 21st of August 2026 in Guinean local time, Where the time now in Guinea is 21:45 PM and the time now in Singapore is 05:45 AM in Singaporean local time and the time comparison between Republic of Guinea and Singapore in greenwich time ( GMT ) where Guinea advanced about greenwich time ( GMT +00:00 ) while Singapore advanced about greenwich time ( GMT +08:00 ).