Difference time between United States of America and Guinea in hours, minutes, and seconds is [ -4 hours ] with gregorian date today is Friday 21st of August 2026 in American local time, Where the time now in United States of America is 10:12 AM and the time now in Guinea is 14:12 PM in Guinean local time and the time comparison between United States of America and Guinea in greenwich time ( GMT ) where United States of America late for greenwich time ( GMT -04:00 ) while Guinea he has the same greenwich time ( GMT +00:00 ).