Time in HDT and BIOT
The time difference between Hawaii–Aleutian Daylight Time (HDT) and British Indian Ocean Time (BIOT) is 15 hours. British Indian Ocean Time is 15 hours ahead of Hawaii–Aleutian Daylight Time.
This means 9am HDT is 12am BIOT (next day) and 5pm HDT is 8am BIOT (next day).
Hawaii–Aleutian Daylight Time
- The current local time in HDT is 6:07 pm (September 2, 2026)
- HDT time zone offset is UTC-09:00
British Indian Ocean Time
- The current local time in BIOT is 3:07 pm (September 2, 2026)
- BIOT time zone offset is UTC+06:00
How to convert Hawaii–Aleutian Daylight Time to British Indian Ocean Time?
Add 15 hours to Hawaii–Aleutian Daylight Time to get British Indian Ocean Time.
Time in HDT
00:00
Time in BIOT
00:00
Use the slider above to convert Hawaii–Aleutian Daylight 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
| HDT | BIOT |
|---|---|
| 12am | 3pm |
| 1am | 4pm |
| 2am | 5pm |
| 3am | 6pm |
| 4am | 7pm |
| 5am | 8pm |
| 6am | 9pm |
| 7am | 10pm |
| 8am | 11pm |
| 9am | 12am |
| 10am | 1am |
| 11am | 2am |
| 12pm | 3am |
| 1pm | 4am |
| 2pm | 5am |
| 3pm | 6am |
| 4pm | 7am |
| 5pm | 8am |
| 6pm | 9am |
| 7pm | 10am |
| 8pm | 11am |
| 9pm | 12pm |
| 10pm | 1pm |
| 11pm | 2pm |