Difference time between Hong Kong and Japan in hours, minutes, and seconds is [ -1 hours ] with gregorian date today is Tuesday 10th of November 2026 in Hongkongese local time, Where the time now in Hong Kong is 17:39 PM and the time now in Japan is 18:39 PM in Japanese local time and the time comparison between Hong Kong Special Administrative Region of China and Japan in greenwich time ( GMT ) where Hong Kong advanced about greenwich time ( GMT +08:00 ) while Japan advanced about greenwich time ( GMT +09:00 ).