Difference time between San Marino and Guyana in hours, minutes, and seconds is [ +6 hours ] with gregorian date today is Thursday 21st of May 2026 in Sammarinese local time, Where the time now in San Marino is 03:54 AM and the time now in Guyana is 21:54 PM in Guyanese local time and the time comparison between Republic of San Marino and Guyana in greenwich time ( GMT ) where San Marino advanced about greenwich time ( GMT +02:00 ) while Guyana late for greenwich time ( GMT -04:00 ).