Difference Wiki

PST vs. MST: What's the Difference?

Edited by Huma Saeed || By Sumera Saeed || Published on December 6, 2023
PST (Pacific Standard Time) is the time zone used on the west coast of the USA, while MST (Mountain Standard Time) is used in the mountainous regions, one hour ahead of PST.

Key Differences

PST is the standard time zone for the Pacific region of the United States and parts of Canada. MST, however, is the time zone for regions in the Mountain range area of the United States and Canada.
Sumera Saeed
Dec 06, 2023
PST is generally 8 hours behind Coordinated Universal Time (UTC-8). While, MST is 7 hours behind Coordinated Universal Time (UTC-7), making it one hour ahead of PST.
Sumera Saeed
Dec 06, 2023
During Daylight Saving Time, PST becomes Pacific Daylight Time (PDT), moving an hour forward. Whereas, MST shifts to Mountain Daylight Time (MDT) in this period, also advancing by one hour.
Huma Saeed
Dec 06, 2023
PST covers states like California and Washington in the U.S. MST includes states such as Arizona and Colorado.
Janet White
Dec 06, 2023
Both PST and MST are crucial for coordinating activities like flights and broadcasts across different regions and internationally.
Aimie Carlson
Dec 06, 2023
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Comparison Chart

UTC Offset

UTC-8 (Standard Time)
UTC-7 (Standard Time)
Sumera Saeed
Dec 06, 2023

Daylight Saving Time

Shifts to PDT (UTC-7)
Shifts to MDT (UTC-6)
Sumera Saeed
Dec 06, 2023

Geographic Location

West coast of the USA and parts of Canada
Mountain regions of the USA and Canada
Huma Saeed
Dec 06, 2023

Time Difference

1 hour behind MST
1 hour ahead of PST
Sumera Saeed
Dec 06, 2023

Affected States

Includes California, Washington
Includes Arizona, Colorado
Harlon Moss
Dec 06, 2023
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PST and MST Definitions

PST

PST is 8 hours behind Coordinated Universal Time.
When it's 12 PM in UTC, it's 4 AM in PST.
Harlon Moss
Nov 28, 2023

MST

MST stands for Mountain Standard Time, a time zone in the mountainous regions of the USA.
The conference in Denver will start at 10 AM MST.
Huma Saeed
Nov 28, 2023

PST

PST stands for Pacific Standard Time, a time zone in the western United States.
The meeting was scheduled for 3 PM PST.
Sumera Saeed
Nov 28, 2023

MST

MST is 7 hours behind Coordinated Universal Time.
5 PM in UTC is 10 AM in MST.
Janet White
Nov 28, 2023

PST

PST does not apply during Daylight Saving Time.
California switches from PST to PDT in the summer.
Janet White
Nov 28, 2023

MST

MST impacts television and radio broadcast times in its region.
The game will be broadcast at 7 PM MST.
Aimie Carlson
Nov 28, 2023

PST

PST is observed during the winter months in its region.
We switch back to PST in November.
Sumera Saeed
Nov 28, 2023

MST

MST is used during the winter in its time zone.
We're currently on MST, but will switch to MDT in the spring.
Janet White
Nov 28, 2023

PST

PST is used in broadcast scheduling on the west coast.
The show airs at 8 PM PST on local networks.
Aimie Carlson
Nov 28, 2023

MST

MST is not used during Daylight Saving Time in regions that observe it.
Parts of Arizona remain on MST all year.
Sumera Saeed
Nov 28, 2023

PST

Alternative form of psst
Sumera Saeed
Nov 27, 2023

MST

Mountain Standard Time, the time of the 105th meridian, used in the mountain states of the U.S.
Sumera Saeed
Nov 27, 2023

PST

Standard time in the 8th time zone west of Greenwich, reckoned at the 120th meridian west; used in far western states of the United States
Sumera Saeed
Nov 27, 2023

MST

Standard time in the 7th time zone west of Greenwich, reckoned at the 105th meridian west; used in the mountain states of the United States
Sumera Saeed
Nov 27, 2023

FAQs

What is the main difference between PST and MST?

PST is one hour behind MST and is used in the Pacific coastal region, while MST is used in the mountain regions.
Sumera Saeed
Dec 06, 2023

Do PST and MST always have a one-hour difference?

Yes, except for regions in MST that don't observe Daylight Saving Time.
Huma Saeed
Dec 06, 2023

Which states are in the MST zone?

States like Arizona, Colorado, and parts of New Mexico are in the MST zone.
Aimie Carlson
Dec 06, 2023

Do all regions in MST observe Daylight Saving Time?

No, for example, most of Arizona does not observe Daylight Saving Time.
Harlon Moss
Dec 06, 2023

Which states in the USA use PST?

States like California and Washington use PST.
Sumera Saeed
Dec 06, 2023

Are PST and MST used outside the USA?

Yes, parts of Canada and Mexico also use these time zones.
Sumera Saeed
Dec 06, 2023

Is it currently the same time in both PST and MST zones?

No, there's always a one-hour difference unless affected by Daylight Saving Time.
Harlon Moss
Dec 06, 2023

How does MST differ during Daylight Saving Time?

MST shifts to Mountain Daylight Time (MDT), advancing by one hour.
Sumera Saeed
Dec 06, 2023

When do regions in PST switch to PDT?

They typically switch to PDT in March and return to PST in November.
Aimie Carlson
Dec 06, 2023

Are business hours different in PST compared to MST?

Business hours may be similar, but the time difference should be considered for scheduling.
Sumera Saeed
Dec 06, 2023

How do TV broadcasts work across PST and MST?

Broadcast times are often adjusted to suit each time zone.
Sumera Saeed
Dec 06, 2023

Does the time difference impact online meetings between PST and MST?

Yes, participants need to be aware of the time zone differences.
Aimie Carlson
Dec 06, 2023

Do flights get affected by the difference in PST and MST?

Flight schedules account for the time difference between these zones.
Sumera Saeed
Dec 06, 2023

Are public holidays the same in PST and MST regions?

Most public holidays are the same, but local observances may differ.
Janet White
Dec 06, 2023

Is scheduling sports events challenging between PST and MST?

Yes, it requires coordination to accommodate viewers in both time zones.
Janet White
Dec 06, 2023

Does the one-hour difference affect banking transactions between PST and MST?

It might affect the timing of transactions across these zones.
Sumera Saeed
Dec 06, 2023

Are there any cultural differences between PST and MST regions?

While time zones don't dictate culture, regional differences can exist.
Janet White
Dec 06, 2023

Do international calls between PST and MST need scheduling consideration?

Yes, the one-hour time difference should be considered.
Janet White
Dec 06, 2023

How does the one-hour difference affect travel between PST and MST?

Travelers must adjust their watches when moving between these time zones.
Harlon Moss
Dec 06, 2023

How do daylight hours compare in PST and MST?

Daylight hours may slightly vary, especially during the equinoxes.
Janet White
Dec 06, 2023
About Author
Written by
Sumera Saeed
Sumera is an experienced content writer and editor with a niche in comparative analysis. At Diffeence Wiki, she crafts clear and unbiased comparisons to guide readers in making informed decisions. With a dedication to thorough research and quality, Sumera's work stands out in the digital realm. Off the clock, she enjoys reading and exploring diverse cultures.
Edited by
Huma Saeed
Huma is a renowned researcher acclaimed for her innovative work in Difference Wiki. Her dedication has led to key breakthroughs, establishing her prominence in academia. Her contributions continually inspire and guide her field.

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