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JST to HST converter
Japan Standard Time
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Hawaii Time
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Hawaii Time is always 19 hours behind Japan Standard Time.
When does the difference change?
The difference stays the same all year: HST is 19 hours behind JST.
Questions
What time is 9 AM JST in HST?
9 AM Japan Standard Time is 2 PM the day before Hawaii Time.
How many hours ahead or behind is HST from JST?
Hawaii Time is always 19 hours behind Japan Standard Time.
Does the JST to HST difference change?
No, it stays the same all year.
About these time zones
JST to HST, hour by hour
| Japan Standard Time | Hawaii Time |
|---|---|
| 12 AM | 5 AM (previous day) |
| 1 AM | 6 AM (previous day) |
| 2 AM | 7 AM (previous day) |
| 3 AM | 8 AM (previous day) |
| 4 AM | 9 AM (previous day) |
| 5 AM | 10 AM (previous day) |
| 6 AM | 11 AM (previous day) |
| 7 AM | 12 PM (previous day) |
| 8 AM | 1 PM (previous day) |
| 9 AM | 2 PM (previous day) |
| 10 AM | 3 PM (previous day) |
| 11 AM | 4 PM (previous day) |
| 12 PM | 5 PM (previous day) |
| 1 PM | 6 PM (previous day) |
| 2 PM | 7 PM (previous day) |
| 3 PM | 8 PM (previous day) |
| 4 PM | 9 PM (previous day) |
| 5 PM | 10 PM (previous day) |
| 6 PM | 11 PM (previous day) |
| 7 PM | 12 AM |
| 8 PM | 1 AM |
| 9 PM | 2 AM |
| 10 PM | 3 AM |
| 11 PM | 4 AM |
Based on the clocks on Monday, October 12, 2026. Use the converter above for another date.