Difference time between United States of America and San Marino in hours, minutes, and seconds is [ -6 hours ] with gregorian date today is Saturday 13th of September 2025 in American local time, Where the time now in United States of America is 15:16 PM and the time now in San Marino is 21:16 PM in Sammarinese local time and the time comparison between United States of America and San Marino in greenwich time ( GMT ) where United States of America late for greenwich time ( GMT -04:00 ) while San Marino advanced about greenwich time ( GMT +02:00 ).