Time in CKT and BST
The time difference between Cook Island Time (CKT) and Bougainville Standard Time (BST) is 21 hours. Bougainville Standard Time is 21 hours ahead of Cook Island Time.
This means 9am CKT is 6am BST (next day) and 5pm CKT is 2pm BST (next day).
Cook Island Time
- The current local time in CKT is 6:06 am (July 19, 2026)
- CKT time zone offset is UTC-10:00
Bougainville Standard Time
- The current local time in BST is 7:06 am (July 19, 2026)
- BST time zone offset is UTC+11:00
How to convert Cook Island Time to Bougainville Standard Time?
Add 21 hours to Cook Island Time to get Bougainville Standard Time.
Time in CKT
00:00
Time in BST
00:00
Use the slider above to convert Cook Island Time to Bougainville Standard 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 | BST |
|---|---|
| 12am | 9pm |
| 1am | 10pm |
| 2am | 11pm |
| 3am | 12am |
| 4am | 1am |
| 5am | 2am |
| 6am | 3am |
| 7am | 4am |
| 8am | 5am |
| 9am | 6am |
| 10am | 7am |
| 11am | 8am |
| 12pm | 9am |
| 1pm | 10am |
| 2pm | 11am |
| 3pm | 12pm |
| 4pm | 1pm |
| 5pm | 2pm |
| 6pm | 3pm |
| 7pm | 4pm |
| 8pm | 5pm |
| 9pm | 6pm |
| 10pm | 7pm |
| 11pm | 8pm |