From
Hawaii Time
Honolulu
Time Zone Converter
HST to JST Time Zone Converter
Convert HST to JST with a live clock, current time difference, UTC offsets, and work-hour overlap. JST is 19 hours ahead of HST.
To
Japan Time
Tokyo
When it is 7:30 AM in Hawaii Time, it is 2:30 AM in Japan Time.
HST to JST at a glance
Japan Time is 19 hours ahead of Hawaii Time. If someone gives you a time in Hawaii Time, move the clock by 19 hours to read it in Japan Time. A 9:00 AM start in Honolulu becomes 4:00 AM in Tokyo.
What Hawaii Time covers
Hawaii Time is used in Honolulu and the rest of Hawaii. It does not switch for daylight saving time. It is helpful when your team works with travel, hospitality, or customers in the Pacific.
What Japan Time covers
Japan Time is used throughout Japan. Tokyo follows it year-round without daylight saving changes. It is helpful for manufacturing, gaming, and business coordination with Japan-based teams.
Quick answers
What is the time difference between HST and JST?
Japan Time is 19 hours ahead of Hawaii Time.
What happens to a 3:00 PM meeting in HST?
It lands at 10:00 AM in JST.
Does daylight saving time matter for HST to JST?
Hawaii Time and Japan Time are shown using the offsets that are active right now, so the result already reflects any daylight saving change in effect today.