4 AM HST to JST
4 AM HST = 11 PM JST. JST is 19 hours ahead of HST today.
4 hours of the workday overlap: 2 PM-6 PM HST is 9 AM-1 PM JST. Quick answers: 9 AM HST = 4 AM JST (next day), 12 PM HST = 7 AM JST (next day), 5 PM HST = 12 PM JST (next day).
Convert a time
JST
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Working hours side by side
columns: HST hours PING · 09–18 local MAYBE · 07–09, 18–21 NOT NOW · 21–07Outlined: everyone can be pinged
HST to JST conversion table
| HST | JST | Verdict in JST |
|---|---|---|
| 12 AM · 00:00 | 7 PM · 19:00 | MAYBE |
| 1 AM · 01:00 | 8 PM · 20:00 | MAYBE |
| 2 AM · 02:00 | 9 PM · 21:00 | NOT NOW |
| 3 AM · 03:00 | 10 PM · 22:00 | NOT NOW |
| 4 AM · 04:00 | 11 PM · 23:00 | NOT NOW |
| 5 AM · 05:00 | 12 AM · 00:00 (next day) | NOT NOW |
| 6 AM · 06:00 | 1 AM · 01:00 (next day) | NOT NOW |
| 7 AM · 07:00 | 2 AM · 02:00 (next day) | NOT NOW |
| 8 AM · 08:00 | 3 AM · 03:00 (next day) | NOT NOW |
| 9 AM · 09:00 | 4 AM · 04:00 (next day) | NOT NOW |
| 10 AM · 10:00 | 5 AM · 05:00 (next day) | NOT NOW |
| 11 AM · 11:00 | 6 AM · 06:00 (next day) | NOT NOW |
| 12 PM · 12:00 | 7 AM · 07:00 (next day) | MAYBE |
| 1 PM · 13:00 | 8 AM · 08:00 (next day) | MAYBE |
| 2 PM · 14:00 | 9 AM · 09:00 (next day) | PING |
| 3 PM · 15:00 | 10 AM · 10:00 (next day) | PING |
| 4 PM · 16:00 | 11 AM · 11:00 (next day) | PING |
| 5 PM · 17:00 | 12 PM · 12:00 (next day) | PING |
| 6 PM · 18:00 | 1 PM · 13:00 (next day) | PING |
| 7 PM · 19:00 | 2 PM · 14:00 (next day) | PING |
| 8 PM · 20:00 | 3 PM · 15:00 (next day) | PING |
| 9 PM · 21:00 | 4 PM · 16:00 (next day) | PING |
| 10 PM · 22:00 | 5 PM · 17:00 (next day) | PING |
| 11 PM · 23:00 | 6 PM · 18:00 (next day) | MAYBE |
Cities on HST
Pacific/HonoluluCities on JST
Asia/TokyoOther conversions
All convertersQuestions
What is the time difference between HST and JST?
JST (Japan Standard Time) is 19 hours ahead of HST (Hawaii Standard Time) right now: UTC−10 versus UTC+9.
What is 9 AM HST in JST?
9:00 AM HST is 4 AM JST (next day).
What is 5 PM HST in JST?
5:00 PM HST is 12 PM JST (next day).
Does daylight saving change the HST–JST difference?
HST has no daylight saving; it stays UTC−10 all year. JST has no daylight saving; it stays UTC+9 all year.