Difference time between United States of America and United kingdom in hours, minutes, and seconds is [ -4 hours ] with gregorian date today is Thursday 30th of October 2025 in American local time, Where the time now in United States of America is 16:15 PM and the time now in United kingdom is 20:15 PM in British local time and the time comparison between United States of America and United kingdom in greenwich time ( GMT ) where United States of America late for greenwich time ( GMT -04:00 ) while United kingdom advanced about greenwich time ( GMT +01:00 ).