Time difference between Japan and Hawaii: 19 hours
Japan
UTC+9
--:--:--
Hawaii
UTC-10
--:--:--
Japan is 19 hours ahead of Hawaii
Best time for a call or meeting
Japan 09:00–13:00 = Hawaii 14:00–18:00
Both cities are within business hours (9:00–18:00).
Convert a specific time
→ Hawaii
Hour-by-hour conversion
| Japan | Hawaii |
|---|---|
| 00:00 | 05:00 |
| 01:00 | 06:00 |
| 02:00 | 07:00 |
| 03:00 | 08:00 |
| 04:00 | 09:00 |
| 05:00 | 10:00 |
| 06:00 | 11:00 |
| 07:00 | 12:00 |
| 08:00 | 13:00 |
| 09:00 | 14:00 |
| 10:00 | 15:00 |
| 11:00 | 16:00 |
| 12:00 | 17:00 |
| 13:00 | 18:00 |
| 14:00 | 19:00 |
| 15:00 | 20:00 |
| 16:00 | 21:00 |
| 17:00 | 22:00 |
| 18:00 | 23:00 |
| 19:00 | 00:00 |
| 20:00 | 01:00 |
| 21:00 | 02:00 |
| 22:00 | 03:00 |
| 23:00 | 04:00 |
Business hours 9–18 Waking hours 7–22 Night / early morning
Daylight saving time can change the difference by season. Shown values reflect the current offset.
Frequently asked questions
How many hours is the time difference between Japan and Hawaii?
Japan is 19 hours ahead of Hawaii. When it is 12:00 noon in Japan, it is 17:00 (previous day) in Hawaii.
Does daylight saving time affect the difference?
No. Neither place observes daylight saving time, so the difference stays the same all year.
What is the best time for a call or meeting?
Japan 09:00–13:00 = Hawaii 14:00–18:00. Both cities are within business hours (9:00–18:00).
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