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UTC−6

12am

3am

6am

9am

12pm

3pm

6pm

9pm

MST/MDT

Mountain Standard Time

UTC−7

1h behind

12am

3am

6am

9am

12pm

3pm

6pm

9pm

Mountain Time is on standard time: MST (UTC−7) until Sun, Mar 14, 2027.

Keep MDT (UTC−6)

Quick answers

Selected conversion

6:00 am06:00 CT (UTC-6), Nov 5, 2026 = 5:00 am05:00 MST (UTC-7), Nov 5, 2026

CT is 1 hour ahead of MST.

How the time difference changes

For most of the year, CT is 1 hour ahead of MDT. From Nov 1, 2026 to Mar 14, 2027, CT is 1 hour ahead of MST. Briefly around clock changes, CT is 2 hours ahead of MST or CT and MDT have the same time.

For most of the year, working hours of 9:00 am to 6:00 pm in CT correspond to 8:00 am to 5:00 pm in MDT. At other times of the year, working hours of 9:00 am to 6:00 pm in CT correspond to 8:00 am to 5:00 pm in MST.For most of the year, working hours of 09:00 to 18:00 in CT correspond to 08:00 to 17:00 in MDT. At other times of the year, working hours of 09:00 to 18:00 in CT correspond to 08:00 to 17:00 in MST.

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

Time Difference

Central Time is 1 hour ahead of Mountain Standard Time.
6:00 am06:00 in CT is 5:00 am05:00 in MST

CT to MST call time
Best time for a conference call or a meeting is between 10am-6pm10:00-18:00 in CT which corresponds to 9am-5pm09:00-17:00 in MST

6:00 am06:00 Central Time (CT). Offset UTC -6:00 hours
5:00 am05:00 Mountain Standard Time (MST). Offset UTC -7:00 hours

6:00 am06:00 CT / 5:00 am05:00 MST

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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Central Time

Central Time (CT) is a general term used to describe the areas that observe either the Central Standard Time (CST) or Central Daylight Time (CDT) in the United States and Canada. CT is not static but switches between CDT and CST.

Territories observing the time zone are primarily in North and Central America. It runs through several Mexican and U.S. states, as well as several Canadian provinces and Central American countries.

Countries using this time zone: Belize, Canada, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, United States

Principal Cities: The largest city in the CT time zone is Mexico City in Mexico, with about 12.294 million people. Other major cities in this time zone include Chicago, Houston, Puebla, Santiago de Querétaro.

French: HNC - Heure Normale du Centre

Spanish: CT - Tiempo Central Estándar, CT - Zona Centro

Map of the areas on Central Time (CT) — CT all year CT part of the year
Today all shaded areas are on CT.
Open the world time zone map © OpenStreetMap

CT representations, usage and related time zones

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

-06 - basic short
-0600 - basic
-06:00 - extended

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

-0600 - sign character (-) followed by a four digit time providing hours (06) and minutes (00) of the offset. Indicates an offset of six hours to the west of the zero meridian.

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

Sierra - Military abbreviation for CT
S - short form of 'Sierra'

Time zones with the GMT -6 offset:

CST - Central Standard Time
CT - Central Time
MDT - Mountain Daylight Time
EAST - Easter Island Standard Time
GALT - Galapagos Time
S - Sierra Time Zone

Mountain Daylight Time

Offset: MDT is 6 hours behind Greenwich Mean Time (GMT).

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

Principal Cities: The largest city in the MDT time zone is Ciudad Juárez in Mexico, with about 1.512 million people. Other major cities in this time zone include Denver, El Paso, Albuquerque, Colorado Springs.

French: HAR - Heure Avancée des Rocheuses

Spanish: MT - Zona Pacífico

Map of the areas on Mountain Daylight Time (MDT) — MDT part of the year
Today the shaded areas are on UTC−7 (MST).
Open the world time zone map © OpenStreetMap

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

End: Mountain Daylight Time (MDT) 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: Mountain Daylight Time (MDT) 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.

MDT representations, usage and related time zones