Difference time between United States of America and Vietnam in hours, minutes, and seconds is [ -12 hours ] with gregorian date today is Thursday 25th of December 2025 in American local time, Where the time now in United States of America is 22:09 PM and the time now in Vietnam is 10:09 AM in Vietnamese local time and the time comparison between United States of America and Vietnam in greenwich time ( GMT ) where United States of America late for greenwich time ( GMT -04:00 ) while Vietnam advanced about greenwich time ( GMT +07:00 ).