Time in HST and BST
The time difference between Hawaii–Aleutian Standard Time (HST) and Bougainville Standard Time (BST) is 21 hours. Bougainville Standard Time is 21 hours ahead of Hawaii–Aleutian Standard Time.
This means 9am HST is 6am BST (next day) and 5pm HST is 2pm BST (next day).
Hawaii–Aleutian Standard Time
- The current local time in HST is 7:13 am (July 11, 2026)
- HST time zone offset is UTC-10:00
Bougainville Standard Time
- The current local time in BST is 8:13 am (July 11, 2026)
- BST time zone offset is UTC+11:00
How to convert Hawaii–Aleutian Standard Time to Bougainville Standard Time?
Add 21 hours to Hawaii–Aleutian Standard Time to get Bougainville Standard Time.
Time in HST
00:00
Time in BST
00:00
Use the slider above to convert Hawaii–Aleutian Standard Time to Bougainville Standard Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| HST | BST |
|---|---|
| 12am | 9pm |
| 1am | 10pm |
| 2am | 11pm |
| 3am | 12am |
| 4am | 1am |
| 5am | 2am |
| 6am | 3am |
| 7am | 4am |
| 8am | 5am |
| 9am | 6am |
| 10am | 7am |
| 11am | 8am |
| 12pm | 9am |
| 1pm | 10am |
| 2pm | 11am |
| 3pm | 12pm |
| 4pm | 1pm |
| 5pm | 2pm |
| 6pm | 3pm |
| 7pm | 4pm |
| 8pm | 5pm |
| 9pm | 6pm |
| 10pm | 7pm |
| 11pm | 8pm |