EST to CKT Converter
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Quick answers
Selected conversion
8:00 am08:00 EDT (UTC-4), Oct 12, 2026 = 2:00 am02:00 CKT (UTC-10), Oct 12, 2026
EDT is 6 hours ahead of CKT.
EST (US winter time, UTC-5) and CKT examples
These examples always use EST (UTC-5) 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.
EST is 5 hours ahead of CKT.
EST is US Eastern winter time (early November to mid-March). The rest of the year New York uses EDT (UTC-4), one hour later. For Eastern Time that follows daylight saving time, use ET to CKT. For daylight-time examples, use EDT to CKT.
How the time difference changes
For most of the year, EDT is 6 hours ahead of CKT. From Nov 1, 2026 to Mar 14, 2027, EST is 5 hours ahead of CKT.
For most of the year, working hours of 9:00 am to 5:00 pm in EDT correspond to 3:00 am to 11:00 am in CKT. At other times of the year, working hours of 9:00 am to 5:00 pm in EST correspond to 4:00 am to 12:00 pm in CKT.For most of the year, working hours of 09:00 to 17:00 in EDT correspond to 03:00 to 11:00 in CKT. At other times of the year, working hours of 09:00 to 17:00 in EST correspond to 04:00 to 12:00 in CKT.
Compare EST time with CKT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Eastern Daylight Time is 6 hours ahead of Cook Island Time.
8:00 am08:00 in EDT is 2:00 am02:00 in CKT
EDT to CKT call time
Best time for a conference call or a meeting is between 3pm-5pm15:00-17:00 in EDT which corresponds to 9am-11am09:00-11:00 in CKT
8:00 am08:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
2:00 am02:00 Cook Island Time (CKT). Offset UTC -10:00 hours
8:00 am08:00 EDT / 2:00 am02:00 CKT
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Eastern Standard Time
Offset: EST is 5 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Bahamas, Canada, Haiti, Jamaica, Cayman Islands, Mexico, Panama, Turks & Caicos Is, United States
Principal Cities: The largest city in the EST time zone is New York City in the United States, with about 8.804 million people. Other major cities in this time zone include Toronto, Montréal, Philadelphia, Port-au-Prince.
French: HNE - Heure Normale de l'Est
Spanish: ET - Tiempo del Este, ET - Zona Sureste
Today the lighter areas are on UTC−4 (EDT).
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Eastern Daylight Time (EDT).
End: Eastern Standard Time (EST) ended on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.
Start: Eastern Standard Time (EST) starts on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.
EST representations, usage and related time zones
- -05 - basic short
- -0500 - basic
- -05:00 - extended
- -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates an offset of five hours to the west of the zero meridian.
- Romeo - Military abbreviation for EST
- R - short form of 'Romeo'
- America/Atikokan
- America/Cancun
- America/Cayman
- America/Coral_Harbour
- America/Detroit
- America/Fort_Wayne
- America/Grand_Turk
- America/Indiana/Indianapolis
- America/Indiana/Marengo
- America/Indiana/Petersburg
- America/Indiana/Vevay
- America/Indiana/Vincennes
- America/Indiana/Winamac
- America/Indianapolis
- America/Iqaluit
- America/Jamaica
- America/Kentucky/Louisville
- America/Kentucky/Monticello
- America/Louisville
- America/Montreal
- America/Nassau
- America/New_York
- America/Nipigon
- America/Panama
- America/Pangnirtung
- America/Port-au-Prince
- America/Thunder_Bay
- America/Toronto
- Canada/Eastern
- EST
- EST5EDT
- Jamaica
- US/East-Indiana
- US/Eastern
- US/Michigan
- CDT - Central Daylight Time
- EST - Eastern Standard Time
- ET - Eastern Time
- COT - Colombia Time
- CST - Cuba Standard Time
- EASST - Easter Island Summer Time
- ECT - Ecuador Time
- PET - Peru Time
- R - Romeo 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