Timezone conversion
JST to HST Time — Convert Japan Standard Time to Hawaii Standard Time
HST is currently 19 hours behind JST. This offset stays the same all year — neither zone shifts for daylight saving in a way that changes it.
HST is currently 19 hours behind JST.
JST • JST (UTC+9)
11:32 PM
Thursday, Sep 10
HST • HST (UTC-10)
4:32 AM
Thursday, Sep 10
Abbreviation disambiguation
Hawaii Standard Time is UTC−10 year-round. Hawaii does not observe daylight saving time.
Interactive converter
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Full JST to HST conversion table
| JST | HST |
|---|---|
| 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) |
| 10:00 AM | 3:00 PM(previous day) |
| 11:00 AM | 4:00 PM(previous day) |
| 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 |
| 8:00 PM | 1:00 AM |
| 9:00 PM | 2:00 AM |
| 10:00 PM | 3:00 AM |
| 11:00 PM | 4:00 AM |
Daylight saving and how the gap changes
The JST → HST offset stays constant across the year — neither zone shifts for daylight saving in a way that changes this gap.
Frequently asked questions
- Is HST ahead of or behind JST right now?
- HST is currently 19 hours behind JST.
- What is the current JST to HST time difference?
- Right now the gap is 19 hours — HST is 19 hours behind JST.
- Does the JST → HST offset change during the year?
- No. Neither Japan Standard Time nor Hawaii Standard Time shifts for daylight saving in a way that changes this offset — the gap is the same all year.
- Does JST observe daylight saving time?
- No — Japan Standard Time stays at a fixed UTC offset year-round.
- Does HST observe daylight saving time?
- No — Hawaii Standard Time stays at a fixed UTC offset year-round.
- What time is 3 AM JST in HST?
- 3:00 AM JST is 8:00 AM (previous day) HST.
- What time is 8 AM JST in HST?
- 8:00 AM JST is 1:00 PM (previous day) HST.
- What time is 9 AM JST in HST?
- 9:00 AM JST is 2:00 PM (previous day) HST.
- What time is 10 AM JST in HST?
- 10:00 AM JST is 3:00 PM (previous day) HST.
- What time is 11 AM JST in HST?
- 11:00 AM JST is 4:00 PM (previous day) HST.
- What time is 12 PM (noon) JST in HST?
- 12:00 PM JST is 5:00 PM (previous day) HST.
- What time is 2 PM JST in HST?
- 2:00 PM JST is 7:00 PM (previous day) HST.
- What time is 3 PM JST in HST?
- 3:00 PM JST is 8:00 PM (previous day) HST.
- What time is 4 PM JST in HST?
- 4:00 PM JST is 9:00 PM (previous day) HST.
- What time is 5 PM JST in HST?
- 5:00 PM JST is 10:00 PM (previous day) HST.
- What time is 9 PM JST in HST?
- 9:00 PM JST is 2:00 AM HST.
- What time is 10 PM JST in HST?
- 10:00 PM JST is 3:00 AM HST.
- When is the best time to schedule a call between JST and HST?
- The working-hours overlap (09:00–17:00 in both zones) runs roughly 9:00 AM – 12:00 PM JST (≈ 3 hours). The midpoint of that window — 10:30 AM JST, 3:30 PM HST — is the safest single slot to propose for a live call.
- What time zone does JST refer to?
- JST refers to Japan Standard Time (IANA: Asia/Tokyo).
- What time zone does HST refer to?
- HST refers to Hawaii Standard Time (IANA: Pacific/Honolulu).
- Is HST on this page the same as other zones that share the letters "HST"?
- Hawaii Standard Time is UTC−10 year-round. Hawaii does not observe daylight saving time.