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CST/CDT

Central Standard Time

UTC−6

12am

3am

6am

9am

12pm

3pm

6pm

9pm

Central Time is on standard time: CST (UTC−6) until Sun, Mar 14, 2027.

Keep CDT (UTC−5)

AKST/AKDT

Alaska Standard Time

UTC−9

3h behind

12am

3am

6am

9am

12pm

3pm

6pm

9pm

Alaska Time is on standard time: AKST (UTC−9) until Sun, Mar 14, 2027.

Keep AKDT (UTC−8)

Quick answers

Selected conversion

6:00 am06:00 CST (UTC-6), Nov 4, 2026 = 3:00 am03:00 AKST (UTC-9), Nov 4, 2026

CST is 3 hours ahead of AKST.

CDT and AKDT examples

These examples always use CDT (UTC-5) and AKDT (UTC-8). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

CDT is 3 hours ahead of AKDT.

How the time difference changes

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

For most of the year, working hours of 9:00 am to 6:00 pm in CDT correspond to 6:00 am to 3:00 pm in AKDT. At other times of the year, working hours of 9:00 am to 6:00 pm in CST correspond to 6:00 am to 3:00 pm in AKST.For most of the year, working hours of 09:00 to 18:00 in CDT correspond to 06:00 to 15:00 in AKDT. At other times of the year, working hours of 09:00 to 18:00 in CST correspond to 06:00 to 15:00 in AKST.

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

Time Difference

Central Standard Time is 3 hours ahead of Alaska Standard Time.
6:00 am06:00 in CST is 3:00 am03:00 in AKST

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

6:00 am06:00 Central Standard Time (CST). Offset UTC -6:00 hours
3:00 am03:00 Alaska Standard Time (AKST). Offset UTC -9:00 hours

6:00 am06:00 CST / 3:00 am03:00 AKST

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
CST	AKST
	9:00pm previous day
	10:00pm previous day
	11:00pm previous day
	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
	21:00 previous day
	22:00 previous day
	23:00 previous day
	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
	15:00
	16:00
	17:00
	18:00
	19:00
	20:00

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 the shaded areas are on UTC−6 (Central Standard Time).
Open the world time zone map © OpenStreetMap

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

End: Central Daylight Time (CDT) 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: Central Daylight Time (CDT) 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.

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

Alaska Daylight Time

Offset: AKDT is 8 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: United States

Principal Cities: The largest city in the AKDT 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 Daylight Time (AKDT) — AKDT part of the year
Today the shaded areas are on UTC−9 (AKST).
Open the world time zone map © OpenStreetMap

Daylight Saving: Alaska Daylight Time (AKDT) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe Alaska Standard Time (AKST).

End: Alaska Daylight Time (AKDT) 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: Alaska Daylight Time (AKDT) 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.

AKDT representations, usage and related time zones