HADT to CKT Converter
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Quick answers
Selected conversion
2:00 am02:00 HST (UTC-10), Nov 11, 2026 = 2:00 am02:00 CKT (UTC-10), Nov 11, 2026
HST and CKT have the same local time.
HADT and CKT examples
These examples always use HADT (UTC-9) and CKT (UTC-10). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
HADT is 1 hour ahead of CKT.
How the time difference changes
For most of the year, HADT is 1 hour ahead of CKT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, HST and CKT have the same time.
For most of the year, working hours of 9:00 am to 6:00 pm in HADT correspond to 8:00 am to 5:00 pm in CKT. At other times of the year, working hours of 9:00 am to 6:00 pm in HST correspond to 9:00 am to 6:00 pm in CKT.For most of the year, working hours of 09:00 to 18:00 in HADT correspond to 08:00 to 17:00 in CKT. At other times of the year, working hours of 09:00 to 18:00 in HST correspond to 09:00 to 18:00 in CKT.
Compare HADT time with CKT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Hawaii Standard Time and Cook Island Time have the same local time.
2:00 am02:00 in HST is 2:00 am02:00 in CKT
HST to CKT call time
Best time for a conference call or a meeting is between 9am-6pm09:00-18:00 in HST which corresponds to 9am-6pm09:00-18:00 in CKT.
2:00 am02:00 Hawaii Standard Time (HST). Offset UTC -10:00 hours
2:00 am02:00 Cook Island Time (CKT). Offset UTC -10:00 hours
2:00 am02:00 HST / 2:00 am02:00 CKT
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
| HST | CKT |
|---|---|
| 12:00am | |
| 1:00am | |
| 2:00am | |
| 3:00am | |
| 4:00am | |
| 5:00am | |
| 6:00am | |
| 7:00am | |
| 8:00am | |
| 9:00am | |
| 10:00am | |
| 11:00am | |
| 12:00pm | |
| 1:00pm | |
| 2:00pm | |
| 3:00pm | |
| 4:00pm | |
| 5:00pm | |
| 6:00pm | |
| 7:00pm | |
| 8:00pm | |
| 9:00pm | |
| 10:00pm | |
| 11:00pm | |
| 00:00 | |
| 01:00 | |
| 02:00 | |
| 03:00 | |
| 04:00 | |
| 05:00 | |
| 06:00 | |
| 07:00 | |
| 08:00 | |
| 09:00 | |
| 10:00 | |
| 11:00 | |
| 12:00 | |
| 13:00 | |
| 14:00 | |
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| 18:00 | |
| 19:00 | |
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| 21:00 | |
| 22:00 | |
| 23:00 |
Hawaii-Aleutian Daylight Time
Offset: HADT is 9 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: United States
Today the shaded areas are on UTC−10 (HST).
Daylight Saving: Hawaii-Aleutian Daylight Time (HADT) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe Hawaii-Aleutian Standard Time (HAST).
End: Hawaii-Aleutian Daylight Time (HADT) ended on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.
Start: Hawaii-Aleutian Daylight Time (HADT) starts on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.
See USA daylight saving time and upcoming clock changes worldwide.
HADT representations, usage and related time zones
- -09 - basic short
- -0900 - basic
- -09:00 - extended
- -0900 - sign character (-) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates an offset of nine hours to the west of the zero meridian.
- Victor - Military abbreviation for HADT
- V - short form of 'Victor'
- AKST - Alaska Standard Time
- AHDT - Alaska-Hawaii Daylight Time
- HADT - Hawaii-Aleutian Daylight Time
- GAMT - Gambier Time
- HDT - Hawaii-Aleutian Daylight Time
- V - Victor Time Zone
Cook Island Time
Offset: CKT is 10 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Cook Islands
Principal Cities: The largest city in the CKT time zone is Avarua in the Cook Islands, with about 13,373 people. Other major cities in this time zone include Matavera.
Daylight Saving: Clocks in Cook Island Time (CKT) do not change for daylight saving time, so CKT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
CKT representations, usage and related time zones
- -10 - basic short
- -1000 - basic
- -10:00 - extended
- -1000 - sign character (-) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates an offset of ten hours to the west of the zero meridian.
- Whiskey - Military abbreviation for CKT
- W - short form of 'Whiskey'
- HAST - Hawaii-Aleutian Standard Time
- CKT - Cook Island Time
- HST - Hawaii Standard Time
- TAHT - Tahiti Time
- W - Whiskey Time Zone