Difference time between Hong Kong and United States of America in hours, minutes, and seconds is [ +12 hours ] with gregorian date today is Wednesday 17th of September 2025 in Hongkongese local time, Where the time now in Hong Kong is 03:31 AM and the time now in United States of America is 15:31 PM in American local time and the time comparison between Hong Kong Special Administrative Region of China and United States of America in greenwich time ( GMT ) where Hong Kong advanced about greenwich time ( GMT +08:00 ) while United States of America late for greenwich time ( GMT -04:00 ).