EST to HADT Converter
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Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
8:00 am08:00 EDT (UTC-4), Oct 17, 2026 = 3:00 am03:00 HADT (UTC-9), Oct 17, 2026
EDT is 5 hours ahead of HADT.
EST (US winter time, UTC-5) and HADT examples
These examples always use EST (UTC-5) and HADT (UTC-9). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
EST is 4 hours ahead of HADT.
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 HADT. For daylight-time examples, use EDT to HADT.
How the time difference changes
For most of the year, EDT is 5 hours ahead of HADT. From Nov 1, 2026 to Mar 14, 2027, EST is 5 hours ahead of HST. Briefly around clock changes, EDT is 6 hours ahead of HST or EST is 4 hours ahead of HADT.
For most of the year, working hours of 9:00 am to 6:00 pm in EDT correspond to 4:00 am to 1:00 pm in HADT. At other times of the year, working hours of 9:00 am to 6:00 pm in EST correspond to 4:00 am to 1:00 pm in HST.For most of the year, working hours of 09:00 to 18:00 in EDT correspond to 04:00 to 13:00 in HADT. At other times of the year, working hours of 09:00 to 18:00 in EST correspond to 04:00 to 13:00 in HST.
Compare EST time with HADT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Eastern Daylight Time is 5 hours ahead of Hawaii-Aleutian Daylight Time.
8:00 am08:00 in EDT is 3:00 am03:00 in HADT
EDT to HADT call time
Best time for a conference call or a meeting is between 2pm-6pm14:00-18:00 in EDT which corresponds to 9am-1pm09:00-13:00 in HADT
8:00 am08:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
3:00 am03:00 Hawaii-Aleutian Daylight Time (HADT). Offset UTC -9:00 hours
8:00 am08:00 EDT / 3:00 am03:00 HADT
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Eastern Standard Time
Offset: EST is 5 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Bahamas, Canada, Cayman Islands, Haiti, Jamaica, Mexico, Panama, Turks and Caicos Islands, 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.
See USA daylight saving time and upcoming clock changes worldwide.
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
Hawaii-Aleutian Daylight Time
Offset: HADT is 9 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: United States
Today all shaded areas are on HADT.
Daylight Saving: Hawaii-Aleutian Daylight Time (HADT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Hawaii-Aleutian Standard Time (HAST).
Start: Hawaii-Aleutian Daylight Time (HADT) started 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. Daylight saving starts annually on the second Sunday of March.
End: Hawaii-Aleutian Daylight Time (HADT) ends 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 local standard time instead. Daylight saving ends annually on the first Sunday of November.
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 Daylight Time
- V - Victor Time Zone