Difference time between Guyana and Oman in hours, minutes, and seconds is [ -8 hours ] with gregorian date today is Thursday 22nd of October 2026 in Guyanese local time, Where the time now in Guyana is 17:21 PM and the time now in Oman is 01:21 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 ).