Time in HST and BIOT
The time difference between Hawaii–Aleutian Standard Time (HST) and British Indian Ocean Time (BIOT) is 16 hours. British Indian Ocean Time is 16 hours ahead of Hawaii–Aleutian Standard Time.
This means 9am HST is 1am BIOT (next day) and 5pm HST is 9am BIOT (next day).
Hawaii–Aleutian Standard Time
- The current local time in HST is 7:10 am (July 11, 2026)
- HST time zone offset is UTC-10:00
British Indian Ocean Time
- The current local time in BIOT is 3:10 am (July 11, 2026)
- BIOT time zone offset is UTC+06:00
How to convert Hawaii–Aleutian Standard Time to British Indian Ocean Time?
Add 16 hours to Hawaii–Aleutian Standard Time to get British Indian Ocean Time.
Time in HST
00:00
Time in BIOT
00:00
Use the slider above to convert Hawaii–Aleutian Standard Time to British Indian Ocean 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 | BIOT |
|---|---|
| 12am | 4pm |
| 1am | 5pm |
| 2am | 6pm |
| 3am | 7pm |
| 4am | 8pm |
| 5am | 9pm |
| 6am | 10pm |
| 7am | 11pm |
| 8am | 12am |
| 9am | 1am |
| 10am | 2am |
| 11am | 3am |
| 12pm | 4am |
| 1pm | 5am |
| 2pm | 6am |
| 3pm | 7am |
| 4pm | 8am |
| 5pm | 9am |
| 6pm | 10am |
| 7pm | 11am |
| 8pm | 12pm |
| 9pm | 1pm |
| 10pm | 2pm |
| 11pm | 3pm |