Difference time between Guyana and Sierra Leone in hours, minutes, and seconds is [ -4 hours ] with gregorian date today is Tuesday 10th of November 2026 in Guyanese local time, Where the time now in Guyana is 21:37 PM and the time now in Sierra Leone is 01:37 AM in Sierra Leonean local time and the time comparison between Co-operative Republic of Guyana and Sierra Leone in greenwich time ( GMT ) where Guyana late for greenwich time ( GMT -04:00 ) while Sierra Leone he has the same greenwich time ( GMT +00:00 ).