Time zone · Americas
MST
Mexican Pacific Standard Time
Mexican Pacific Standard Time (MST) covers a stable stretch of western Mexico, including Hermosillo and Mazatlan, on a steady clock all year with no daylight saving changes to worry about.
Saturday, May 30, 2026
Current offset
UTC-07:00
Standard · MST
Daylight saving
Not observed
Year-round standard time
IANA zones
2
None observe daylight saving
DST offset
—
No summer variant
About MST
A fixed, year-round offset.
Mexican Pacific Standard Time (MST) covers a stable stretch of western Mexico, including Hermosillo and Mazatlan, on a steady clock all year with no daylight saving changes to worry about.
IANA zones · the technical identifiers
The 2 zones that resolve to MST.
For software, always store the IANA identifier — never the abbreviation alone. The database keeps these zones distinct because their rules can, and historically did, diverge.
Where MST is used
One country.
Same offset · UTC-07:00
Other zones at UTC-07:00 right now.
These named zones share MST's offset today. When daylight saving rules differ, they drift apart for part of the year.
Frequently asked questions
Common questions about MST, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- What areas use Mexican Pacific Standard Time (MST)?
- It is used in parts of western Mexico, including the representative zones like Hermosillo and Mazatlan, which stay on this offset year-round.
- Does Mexican Pacific Standard Time observe daylight saving time?
- No, this region does not observe daylight saving time, so clocks stay the same in summer and winter.
- What is the current offset and abbreviation for Mexican Pacific Standard Time?
- The offset remains UTC−07:00 and is abbreviated as MST, with no daylight saving shift applied at the moment.
- When was the current offset for Mexican Pacific Standard Time established?
- The clocks in this region adopted the current local time around late May 2021 and have kept it steady since then.
- Is Mexican Pacific Standard Time the same as other labels called MST?
- No; even though the abbreviation MST is shared with other regions elsewhere, Mexican Pacific Standard Time has its own local history and rules.
- What makes Mexican Pacific Standard Time easy for travel and collaboration?
- It offers a predictable schedule all year, with no mid-year clock changes to confuse cross-region meetings or flight times.
- Which country predominantly uses Mexican Pacific Standard Time?
- Mexico is the main country where this time scheme is used, especially in its western Pacific-influenced regions.
- Are there any upcoming time changes in Mexican Pacific Standard Time?
- There are no scheduled future transitions for this region, so the clocks are expected to stay on the same offset.
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