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EDT/EST

Eastern Daylight Time

UTC−4

12am

3am

6am

9am

12pm

3pm

6pm

9pm

Eastern Time is on daylight saving time: EDT (UTC−4) until Sun, Nov 1.

Use EST all year (UTC−5)

AKDT/AKST

Alaska Daylight Time

UTC−8

4h behind

12am

3am

6am

9am

12pm

3pm

6pm

9pm

Alaska Time is on daylight saving time: AKDT (UTC−8) until Sun, Nov 1.

Use AKST all year (UTC−9)

Quick answers

Selected conversion

8:00 am08:00 EDT (UTC-4), Oct 16, 2026 = 4:00 am04:00 AKDT (UTC-8), Oct 16, 2026

EDT is 4 hours ahead of AKDT.

EST (US winter time, UTC-5) and AKST examples

These examples always use EST (UTC-5) and AKST (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 AKST.

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 AKST. For daylight-time examples, use EDT to AKDT.

How the time difference changes

For most of the year, EDT is 4 hours ahead of AKDT. From Nov 1, 2026 to Mar 14, 2027, EST is 4 hours ahead of AKST. Briefly around clock changes, EDT is 5 hours ahead of AKST or EST is 3 hours ahead of AKDT.

For most of the year, working hours of 9:00 am to 6:00 pm in EDT correspond to 5:00 am to 2:00 pm in AKDT. At other times of the year, working hours of 9:00 am to 6:00 pm in EST correspond to 5:00 am to 2:00 pm in AKST.For most of the year, working hours of 09:00 to 18:00 in EDT correspond to 05:00 to 14:00 in AKDT. At other times of the year, working hours of 09:00 to 18:00 in EST correspond to 05:00 to 14:00 in AKST.

Compare EST time with AKST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Eastern Daylight Time is 4 hours ahead of Alaska Daylight Time.
8:00 am08:00 in EDT is 4:00 am04:00 in AKDT

EDT to AKDT call time
Best time for a conference call or a meeting is between 1pm-6pm13:00-18:00 in EDT which corresponds to 9am-2pm09:00-14:00 in AKDT

8:00 am08:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
4:00 am04:00 Alaska Daylight Time (AKDT). Offset UTC -8:00 hours

8:00 am08:00 EDT / 4:00 am04:00 AKDT

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.

Hourly time comparison
EDT	AKDT
	8:00pm previous day
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	20:00 previous day
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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

Map of the areas on Eastern Standard Time (EST) — EST all year EST part of the year
Today the lighter areas are on UTC−4 (EDT).
Open the world time zone map © OpenStreetMap

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

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data

-05 - basic short
-0500 - basic
-05:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers

-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.

Military/NATO: Used by the U.S. military, Chinese military and others

Romeo - Military abbreviation for EST
R - short form of 'Romeo'

IANA/Olson: Reflects EST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems

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

Time zones with the GMT -5 offset:

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

Alaska Standard Time

Offset: AKST is 9 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: United States

Principal Cities: The largest city in the AKST time zone is Anchorage in the United States, with about 289,600 people. Other major cities in this time zone include Fairbanks, Juneau, Knik-Fairview, Wasilla.

Map of the areas on Alaska Standard Time (AKST) — AKST part of the year
Today the shaded areas are on UTC−8 (AKDT).
Open the world time zone map © OpenStreetMap

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Alaska Daylight Time (AKDT).

End: Alaska Standard Time (AKST) 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: Alaska Standard Time (AKST) 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.

AKST representations, usage and related time zones