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AKDT/AKST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Alaska Time is on daylight saving time: AKDT (UTC−8) until Sun, Nov 1.
CDT
UTC−5
3h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

4:00 am04:00 AKDT (UTC-8), Oct 21, 2026 = 7:00 am07:00 CDT (UTC-5), Oct 21, 2026

AKDT is 3 hours behind CDT.

AKST and CDT examples

These examples always use AKST (UTC-9) and CDT (UTC-5). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

AKST is 4 hours behind CDT.

How the time difference changes

For most of the year, AKDT is 3 hours behind CDT. From Nov 1, 2026 to Mar 14, 2027, AKST is 3 hours behind CST. Briefly around clock changes, AKDT is 2 hours behind CST or AKST is 4 hours behind CDT.

For most of the year, working hours of 9:00 am to 6:00 pm in AKDT correspond to 12:00 pm to 9:00 pm in CDT. At other times of the year, working hours of 9:00 am to 6:00 pm in AKST correspond to 12:00 pm to 9:00 pm in CST.For most of the year, working hours of 09:00 to 18:00 in AKDT correspond to 12:00 to 21:00 in CDT. At other times of the year, working hours of 09:00 to 18:00 in AKST correspond to 12:00 to 21:00 in CST.

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

Time Difference

Alaska Daylight Time is 3 hours behind Central Daylight Time.
4:00 am04:00 in AKDT is 7:00 am07:00 in CDT

AKDT to CDT call time
Best time for a conference call or a meeting is between 9am-3pm09:00-15:00 in AKDT which corresponds to 12pm-6pm12:00-18:00 in CDT

4:00 am04:00 Alaska Daylight Time (AKDT). Offset UTC -8:00 hours
7:00 am07:00 Central Daylight Time (CDT). Offset UTC -5:00 hours

4:00 am04:00 AKDT / 7:00 am07:00 CDT

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
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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).

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).

123456789101112End: 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.

123456789101112Start: 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

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -09 - basic short
  • -0900 - basic
  • -09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -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.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Victor - Military abbreviation for AKST
  • V - short form of 'Victor'
IANA/Olson: Reflects AKST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Anchorage
  • America/Juneau
  • America/Metlakatla
  • America/Nome
  • America/Sitka
  • America/Yakutat
  • US/Alaska
Time zones with the GMT -9 offset:
  • 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

Central Daylight Time

Offset: CDT is 5 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Canada, Mexico, United States

Principal Cities: The largest city in the CDT time zone is Chicago in the United States, with about 2.664 million people. Other major cities in this time zone include Houston, San Antonio, Dallas, Fort Worth.

French: HAC - Heure Avancée du Centre

Spanish: CT - Zona Centro

Map of the areas on Central Daylight Time (CDT)
CDT part of the year

Today all shaded areas are on CDT.

Daylight Saving: Central Daylight Time (CDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Central Standard Time (CST).

123456789101112Start: Central Daylight Time (CDT) 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.

123456789101112End: Central Daylight Time (CDT) 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.

CDT 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 CDT
  • R - short form of 'Romeo'
IANA/Olson: Reflects CDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Chicago
  • America/Indiana/Knox
  • America/Indiana/Tell_City
  • America/Knox_IN
  • America/Matamoros
  • America/Menominee
  • America/North_Dakota/Beulah
  • America/North_Dakota/Center
  • America/North_Dakota/New_Salem
  • America/Ojinaga
  • America/Rainy_River
  • America/Rankin_Inlet
  • America/Resolute
  • America/Winnipeg
  • CST6CDT
  • Canada/Central
  • US/Central
  • US/Indiana-Starke
CDT Abbreviation: Several time zones share CDT abbreviation and it could refer to these time zones
  • Central Daylight Time - UTC -5
  • Cuba Daylight Time - UTC -4
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