Time in JST and CKT
The time difference between Japan Standard Time (JST) and Cook Island Time (CKT) is 19 hours. Cook Island Time is 19 hours behind Japan Standard Time.
This means 9am JST is 2pm CKT (previous day) and 5pm JST is 10pm CKT (previous day).
Japan Standard Time
- The current local time in JST is 4:08 am (July 9, 2026)
- JST time zone offset is UTC+09:00
Cook Island Time
- The current local time in CKT is 5:08 am (July 9, 2026)
- CKT time zone offset is UTC-10:00
How to convert Japan Standard Time to Cook Island Time?
Subtract 19 hours from Japan Standard Time to get Cook Island Time.
Time in JST
00:00
Time in CKT
00:00
Use the slider above to convert Japan 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
| JST | CKT |
|---|---|
| 12am | 5am |
| 1am | 6am |
| 2am | 7am |
| 3am | 8am |
| 4am | 9am |
| 5am | 10am |
| 6am | 11am |
| 7am | 12pm |
| 8am | 1pm |
| 9am | 2pm |
| 10am | 3pm |
| 11am | 4pm |
| 12pm | 5pm |
| 1pm | 6pm |
| 2pm | 7pm |
| 3pm | 8pm |
| 4pm | 9pm |
| 5pm | 10pm |
| 6pm | 11pm |
| 7pm | 12am |
| 8pm | 1am |
| 9pm | 2am |
| 10pm | 3am |
| 11pm | 4am |