Difference time between Guyana and Oman in hours, minutes, and seconds is [ -8 hours ] with gregorian date today is Friday 19th of September 2025 in Guyanese local time, Where the time now in Guyana is 00:26 AM and the time now in Oman is 08:26 AM in Omani local time and the time comparison between Co-operative Republic of Guyana and Oman in greenwich time ( GMT ) where Guyana late for greenwich time ( GMT -04:00 ) while Oman advanced about greenwich time ( GMT +04:00 ).