HST is 10 hours behind UTC. Example city: UTC in London (winter), Reykjavik vs HST in Honolulu.
Offset reference
| Zone | Abbreviation | UTC offset | Example city |
|---|---|---|---|
| Coordinated Universal Time | UTC | UTC+00:00 | London (winter), Reykjavik |
| Hawaii Standard Time | HST | UTC-10:00 | Honolulu |
UTC to HST hour-by-hour
| UTC | HST |
|---|---|
| 00:00 | 14:00 |
| 01:00 | 15:00 |
| 02:00 | 16:00 |
| 03:00 | 17:00 |
| 04:00 | 18:00 |
| 05:00 | 19:00 |
| 06:00 | 20:00 |
| 07:00 | 21:00 |
| 08:00 | 22:00 |
| 09:00 | 23:00 |
| 10:00 | 00:00 |
| 11:00 | 01:00 |
| 12:00 | 02:00 |
| 13:00 | 03:00 |
| 14:00 | 04:00 |
| 15:00 | 05:00 |
| 16:00 | 06:00 |
| 17:00 | 07:00 |
| 18:00 | 08:00 |
| 19:00 | 09:00 |
| 20:00 | 10:00 |
| 21:00 | 11:00 |
| 22:00 | 12:00 |
| 23:00 | 13:00 |
This table uses the fixed offsets above. For real dates with DST transitions, use the Time Zone Converter or a city clock such as World Clock.