Time in BST and CKT
The time difference between Bougainville Standard Time (BST) and Cook Island Time (CKT) is 21 hours. Cook Island Time is 21 hours behind Bougainville Standard Time.
This means 9am BST is 12pm CKT (previous day) and 5pm BST is 8pm CKT (previous day).
Bougainville Standard Time
- The current local time in BST is 12:38 am (July 19, 2026)
- BST time zone offset is UTC+11:00
Cook Island Time
- The current local time in CKT is 11:38 pm (July 18, 2026)
- CKT time zone offset is UTC-10:00
How to convert Bougainville Standard Time to Cook Island Time?
Subtract 21 hours from Bougainville Standard Time to get Cook Island Time.
Time in BST
00:00
Time in CKT
00:00
Use the slider above to convert Bougainville Standard Time to Cook Island 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
| BST | CKT |
|---|---|
| 12am | 3am |
| 1am | 4am |
| 2am | 5am |
| 3am | 6am |
| 4am | 7am |
| 5am | 8am |
| 6am | 9am |
| 7am | 10am |
| 8am | 11am |
| 9am | 12pm |
| 10am | 1pm |
| 11am | 2pm |
| 12pm | 3pm |
| 1pm | 4pm |
| 2pm | 5pm |
| 3pm | 6pm |
| 4pm | 7pm |
| 5pm | 8pm |
| 6pm | 9pm |
| 7pm | 10pm |
| 8pm | 11pm |
| 9pm | 12am |
| 10pm | 1am |
| 11pm | 2am |