Tokyo zone
GMT+9 (GMT+9)
Honolulu zone
HST (GMT-10)
Difference
19 hours behind Tokyo
Business overlap
3h (9-5 windows)
Working hours overlap
Each cell is one hour in Tokyo. Filled cells mark when 9 AM – 5 PM in Tokyo and Honolulu both apply.
3 hours per day
- Tokyo
- GMT+9
- Honolulu
- GMT-10
- Difference
- -19h
- Business overlap
- 3h
Hour-by-hour conversion
Each row shows the matching local time in Honolulu for an hour in Tokyo.
| Tokyo | Honolulu | Day | Window |
|---|---|---|---|
| 12:00 AM | 5:00 AM | previous day | — |
| 1:00 AM | 6:00 AM | previous day | — |
| 2:00 AM | 7:00 AM | previous day | — |
| 3:00 AM | 8:00 AM | previous day | — |
| 4:00 AM | 9:00 AM | previous day | — |
| 5:00 AM | 10:00 AM | previous day | — |
| 6:00 AM | 11:00 AM | previous day | — |
| 7:00 AM | 12:00 PM | previous day | — |
| 8:00 AM | 1:00 PM | previous day | — |
| 9:00 AM | 2:00 PM | previous day | Both 9-5 |
| 10:00 AM | 3:00 PM | previous day | Both 9-5 |
| 11:00 AM | 4:00 PM | previous day | Both 9-5 |
| 12:00 PM | 5:00 PM | previous day | — |
| 1:00 PM | 6:00 PM | previous day | — |
| 2:00 PM | 7:00 PM | previous day | — |
| 3:00 PM | 8:00 PM | previous day | — |
| 4:00 PM | 9:00 PM | previous day | — |
| 5:00 PM | 10:00 PM | previous day | — |
| 6:00 PM | 11:00 PM | previous day | — |
| 7:00 PM | 12:00 AM | same day | — |
| 8:00 PM | 1:00 AM | same day | — |
| 9:00 PM | 2:00 AM | same day | — |
| 10:00 PM | 3:00 AM | same day | — |
| 11:00 PM | 4:00 AM | same day | — |
Best meeting windows
If both teams keep standard 9 AM – 5 PM hours, the overlap window is roughly 9:00 AM – 12:00 PM in Tokyo time. That gives you 3 hours per workday for live meetings.
Tighter overlap is achievable by having the side with later working hours start earlier, or by treating the first and last hours of each side as flexible. The bar above marks every hour where both cities sit inside a 9 AM – 5 PM window.
About converting Tokyo time to Honolulu time
Tokyo follows the Asia/Tokyo time zone (currently GMT+9, GMT+9), while Honolulu follows Pacific/Honolulu (currently HST, GMT-10). Honolulu is 19 hours behind Tokyo right now.
Neither city observes daylight saving time, so the offset between them is the same all year.
Reverse this conversion
Honolulu to Tokyo
Open the converter
Plan a meeting between Tokyo and Honolulu
More conversions from Tokyo
Frequently asked questions
- How many hours is Tokyo from Honolulu?
- Honolulu is 19 hours behind Tokyo right now.
- What time is 9:00 AM Tokyo in Honolulu?
- 9:00 AM in Tokyo is 2:00 PM (previous day) in Honolulu.
- What time is 5:00 PM Tokyo in Honolulu?
- 5:00 PM in Tokyo is 10:00 PM (previous day) in Honolulu.
- When do Tokyo and Honolulu business hours overlap?
- Standard 9 AM - 5 PM working hours overlap for about 3 hours, roughly from 9:00 AM to 12:00 PM in Tokyo time.
- Does daylight saving time change the difference between Tokyo and Honolulu?
- Neither Tokyo nor Honolulu observes daylight saving time, so the offset between them is constant year-round.
Local time page
Time in Tokyo
Local time page
Time in Honolulu