Time in CKT and BIOT
The time difference between Cook Island Time (CKT) and British Indian Ocean Time (BIOT) is 16 hours. British Indian Ocean Time is 16 hours ahead of Cook Island Time.
This means 9am CKT is 1am BIOT (next day) and 5pm CKT is 9am BIOT (next day).
Cook Island Time
- The current local time in CKT is 6:03 am (July 19, 2026)
- CKT time zone offset is UTC-10:00
British Indian Ocean Time
- The current local time in BIOT is 2:03 am (July 19, 2026)
- BIOT time zone offset is UTC+06:00
How to convert Cook Island Time to British Indian Ocean Time?
Add 16 hours to Cook Island Time to get British Indian Ocean Time.
Time in CKT
00:00
Time in BIOT
00:00
Use the slider above to convert Cook Island 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
| CKT | 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 |