Updating current time…

MST/MDT

Mountain Standard Time

UTC−7

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)

PST/PDT

Pacific Standard Time

UTC−8

1h behind

12am

3am

6am

9am

12pm

3pm

6pm

9pm

Pacific Time is on standard time: PST (UTC−8) until Sun, Mar 14, 2027.

Keep PDT (UTC−7)

Quick answers

Selected conversion

5:00 am05:00 MST (UTC-7), Nov 3, 2026 = 4:00 am04:00 PST (UTC-8), Nov 3, 2026

MST is 1 hour ahead of PST.

MDT and PDT examples

These examples always use MDT (UTC-6) and PDT (UTC-7). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

MDT is 1 hour ahead of PDT.

How the time difference changes

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

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

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

Time Difference

Mountain Standard Time is 1 hour ahead of Pacific Standard Time.
5:00 am05:00 in MST is 4:00 am04:00 in PST

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

5:00 am05:00 Mountain Standard Time (MST). Offset UTC -7:00 hours
4:00 am04:00 Pacific Standard Time (PST). Offset UTC -8:00 hours

5:00 am05:00 MST / 4:00 am04:00 PST

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
MST	PST
	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
	9:00pm
	10:00pm
	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
	21:00
	22:00

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

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 MDT
S - short form of 'Sierra'

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

America/Boise
America/Cambridge_Bay
America/Ciudad_Juarez
America/Denver
America/Edmonton
America/Inuvik
America/Shiprock
America/Yellowknife
Canada/Mountain
MST7MDT
Navajo
US/Mountain

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

Pacific Daylight Time

Offset: PDT is 7 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Mexico, United States

Principal Cities: The largest city in the PDT time zone is Los Angeles in the United States, with about 3.821 million people. Other major cities in this time zone include Tijuana, San Diego, Mexicali, San Jose.

French: HAP - Heure Avancée du Pacifique

Spanish: PT - Zona Noroeste

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

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

End: Pacific Daylight Time (PDT) 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: Pacific Daylight Time (PDT) 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.

PDT representations, usage and related time zones