JST → HST Converter
Japan to Hawaii — tourism (Japan is Hawaii's second-largest international visitor market), Pearl Harbor operations, and trans-Pacific air coordination.
JST → HST
3:40 AM
Japan Standard Time (GMT+9)
Friday, June 12, 2026
UTC+9 (DST active)
8:40 AM
Hawaii-Aleutian Standard Time (HST)
Thursday, June 11, 2026
UTC-10 (DST active)
Time Zone Converter
JST·Tokyo
3:40 AM
Friday, June 12, 2026
HST·Honolulu
8:40 AM
Thursday, June 11, 2026
Compare Times
| JST | HST |
|---|
Morning
| JST | HST |
|---|---|
| 12:00 AM JST | 5:00 AM HST |
| 1:00 AM JST | 6:00 AM HST |
| 2:00 AM JST | 7:00 AM HST |
| 3:00 AM JST | 8:00 AM HST |
| 4:00 AM JST | 9:00 AM HST |
| 5:00 AM JST | 10:00 AM HST |
| 6:00 AM JST | 11:00 AM HST |
| 7:00 AM JST | 12:00 PM HST |
| 8:00 AM JST | 1:00 PM HST |
| 9:00 AM JST | 2:00 PM HST |
| 10:00 AM JST | 3:00 PM HST |
| 11:00 AM JST | 4:00 PM HST |
Afternoon
| JST | HST |
|---|---|
| 12:00 PM JST | 5:00 PM HST |
| 1:00 PM JST | 6:00 PM HST |
| 2:00 PM JST | 7:00 PM HST |
| 3:00 PM JST | 8:00 PM HST |
| 4:00 PM JST | 9:00 PM HST |
Evening
| JST | HST |
|---|---|
| 5:00 PM JST | 10:00 PM HST |
| 6:00 PM JST | 11:00 PM HST |
| 7:00 PM JST | 12:00 AM HST |
| 8:00 PM JST | 1:00 AM HST |
| 9:00 PM JST | 2:00 AM HST |
| 10:00 PM JST | 3:00 AM HST |
| 11:00 PM JST | 4:00 AM HST |
Frequently Asked Questions: JST to HST
What is the time difference between Japan Standard Time and Hawaii Time?
HST is 19 hours behind JST (standard time).
What time is midnight in JST in HST?
Midnight (12:00 AM) in Japan Standard Time translates to 5:00 AM HST in Hawaii Time.
When do business hours overlap between JST and HST?
Standard 9–5 business hours do not overlap between Japan Standard Time and Hawaii Time. The closest scheduling window is 20:00–21:00 JST (01:00–02:00 HST).
Common Time Conversions
EST · New York →
CST · Chicago →
MST · Denver →
PST · Los Angeles →
AKST · Anchorage →
HST · Honolulu →
UTC · Universal →
GMT · London →
IST · New Delhi →
CET · Paris →
How Time Zone Conversion Works
Time zone conversion works by comparing the UTC offset of one location to another. Every city or region is measured relative to Coordinated Universal Time (UTC), which acts as the global reference point for civil time.
HST is 19 hours behind JST (standard time).
Daylight Saving Time: Neither JST nor HST observes Daylight Saving Time. The 19-hour offset is constant year-round with no seasonal variation.
Best time to call Honolulu from Tokyo
Planning a remote meeting or international call? The optimal business hours overlap between Tokyo and Honolulu is challenging, with few shared business hours between the two zones.
Try Meeting Planner for multi-city group scheduling →JST
20:00–21:00
Japan Time
HST
01:00–02:00
Hawaii Time
Recommended time: 20:00 JST / 01:00 HST
DST schedule for 2026
Current-year daylight saving start and end dates for the selected zones.
JST · Japan Time
Standard offset +09:00
Japan Time remains on a constant standard offset for the year.
Japan has not observed daylight saving time since 1951.
HST · Hawaii Time
Standard offset −10:00
Hawaii Time remains on a constant standard offset for the year.
Hawaii does not observe DST. The Aleutian Islands portion of HAST does observe DST (becoming HADT, UTC−9), but population there is negligible. For practical purposes HST is a fixed-offset zone.
Principal Cities
JST — Japan Time
- TokyoJapan
- YokohamaJapan
- OsakaJapan
- NagoyaJapan
HST — Hawaii Time
- HonoluluUnited States
- Pearl CityUnited States
- HiloUnited States
- KailuaUnited States
Flight Information
Route
NRT ↔ HNL
Avg. flight time
9h
Direct flights
Available
~9h direct flight.