Time in CKT and SLST
The time difference between Cook Island Time (CKT) and Sri Lanka Standard Time (SLST) is 15 hours 30 minutes. Sri Lanka Standard Time is 15 hours 30 minutes ahead of Cook Island Time.
This means 9am CKT is 12:30am SLST (next day) and 5pm CKT is 8:30am SLST (next day).
Cook Island Time
- The current local time in CKT is 6:04 am (July 19, 2026)
- CKT time zone offset is UTC-10:00
Sri Lanka Standard Time
- The current local time in SLST is 1:34 am (July 19, 2026)
- SLST time zone offset is UTC+05:30
How to convert Cook Island Time to Sri Lanka Standard Time?
Add 15 hours 30 minutes to Cook Island Time to get Sri Lanka Standard Time.
Time in CKT
00:00
Time in SLST
00:00
Use the slider above to convert Cook Island Time to Sri Lanka 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 | SLST |
|---|---|
| 12am | 3:30pm |
| 1am | 4:30pm |
| 2am | 5:30pm |
| 3am | 6:30pm |
| 4am | 7:30pm |
| 5am | 8:30pm |
| 6am | 9:30pm |
| 7am | 10:30pm |
| 8am | 11:30pm |
| 9am | 0:30am |
| 10am | 1:30am |
| 11am | 2:30am |
| 12pm | 3:30am |
| 1pm | 4:30am |
| 2pm | 5:30am |
| 3pm | 6:30am |
| 4pm | 7:30am |
| 5pm | 8:30am |
| 6pm | 9:30am |
| 7pm | 10:30am |
| 8pm | 11:30am |
| 9pm | 12:30pm |
| 10pm | 1:30pm |
| 11pm | 2:30pm |