Time in BIOT and HDT
The time difference between British Indian Ocean Time (BIOT) and Hawaii–Aleutian Daylight Time (HDT) is 15 hours. Hawaii–Aleutian Daylight Time is 15 hours behind British Indian Ocean Time.
This means 9am BIOT is 6pm HDT (previous day) and 5pm BIOT is 2am HDT.
British Indian Ocean Time
- The current local time in BIOT is 4:33 am (July 19, 2026)
- BIOT time zone offset is UTC+06:00
Hawaii–Aleutian Daylight Time
- The current local time in HDT is 7:33 am (July 19, 2026)
- HDT time zone offset is UTC-09:00
How to convert British Indian Ocean Time to Hawaii–Aleutian Daylight Time?
Subtract 15 hours from British Indian Ocean Time to get Hawaii–Aleutian Daylight Time.
Time in BIOT
00:00
Time in HDT
00:00
Use the slider above to convert British Indian Ocean Time to Hawaii–Aleutian Daylight 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
| BIOT | HDT |
|---|---|
| 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 | 12am |
| 4pm | 1am |
| 5pm | 2am |
| 6pm | 3am |
| 7pm | 4am |
| 8pm | 5am |
| 9pm | 6am |
| 10pm | 7am |
| 11pm | 8am |