Difference time between United States of America and Greece in hours, minutes, and seconds is [ -7 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 15:17 PM and the time now in Greece is 22:17 PM in Greek local time and the time comparison between United States of America and Greece in greenwich time ( GMT ) where United States of America late for greenwich time ( GMT -04:00 ) while Greece advanced about greenwich time ( GMT +03:00 ).