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Mountain Standard Time (MST) — Live Rocky Mountain & Arizona Clock

Live Mountain Standard Time (MST UTC-7 / MDT UTC-6) clock. Denver and Arizona timezone schedule, and 24-hour time conversion grid.

21:15:09Mon, Sep 7
Time now in MST
UTC
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London New York Tokyo Paris Sydney Dubai Mumbai Singapore 🟢 Live
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MST
MST ☀️ DST
🏢 Denver, Phoenix, Salt Lake City, Calgary and 14 more
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21:15:09
Mon, Sep 7
📍 UTC
🟢 Live

📍 Mountain Standard Time Timezone, Daylight & Astronomical Profile

Official geographic coordinates, UTC offset, DST rules, and financial market session hours

Country & RegionMulti-Region Timezone (ISO: MST)Official CurrencyRegional Currencies
International Calling CodeRegional Calling CodesMetro PopulationMulti-Million Population Zone
Geographic CoordinatesGeographical Timezone BandIANA Timezone IDMST
Standard UTC / GMT OffsetUTC-7 (Pairs with MDT UTC-6 in summer)Solar & Twilight CycleVaries by geographical latitude within timezone
Major Financial ExchangeRegional Financial ExchangesRegular Trading HoursStandard Business Hours (09:00 – 17:00 Local)
☀️ Daylight Saving Time (DST) & Transition Rules:

Advances to MDT on 2nd Sunday in March (except Arizona which stays on MST year-round).

🕒 24-Hour Time Conversion Table: Mountain Standard Time vs Global Hubs

Side-by-side hourly reference mapping Mountain Standard Time local time to UTC, London, New York, Tokyo, and Mumbai

Mountain Standard Time (24H)Mountain Standard Time (12H)UTC TimeLondon (BST)New York (EDT)Tokyo (JST)Mumbai (IST)Activity Window
00:0012:00 AM07:00 UTC08:0003:0016:0012:30 Night
01:0001:00 AM08:00 UTC09:0004:0017:0013:30 Night
02:0002:00 AM09:00 UTC10:0005:0018:0014:30 Night
03:0003:00 AM10:00 UTC11:0006:0019:0015:30 Night
04:0004:00 AM11:00 UTC12:0007:0020:0016:30 Night
05:0005:00 AM12:00 UTC13:0008:0021:0017:30 Night
06:0006:00 AM13:00 UTC14:0009:0022:0018:30 Early Morning
07:0007:00 AM14:00 UTC15:0010:0023:0019:30 Early Morning
08:0008:00 AM15:00 UTC16:0011:0000:0020:30 Early Morning
09:0009:00 AM16:00 UTC17:0012:0001:0021:30 Business Hours (Working)
10:0010:00 AM17:00 UTC18:0013:0002:0022:30 Business Hours (Working)
11:0011:00 AM18:00 UTC19:0014:0003:0023:30 Business Hours (Working)
12:0012:00 PM19:00 UTC20:0015:0004:0000:30 Business Hours (Working)
13:0001:00 PM20:00 UTC21:0016:0005:0001:30 Business Hours (Working)
14:0002:00 PM21:00 UTC22:0017:0006:0002:30 Business Hours (Working)
15:0003:00 PM22:00 UTC23:0018:0007:0003:30 Business Hours (Working)
16:0004:00 PM23:00 UTC00:0019:0008:0004:30 Business Hours (Working)
17:0005:00 PM00:00 UTC01:0020:0009:0005:30 Business Hours (Working)
18:0006:00 PM01:00 UTC02:0021:0010:0006:30 Evening (Personal)
19:0007:00 PM02:00 UTC03:0022:0011:0007:30 Evening (Personal)
20:0008:00 PM03:00 UTC04:0023:0012:0008:30 Evening (Personal)
21:0009:00 PM04:00 UTC05:0000:0013:0009:30 Evening (Personal)
22:0010:00 PM05:00 UTC06:0001:0014:0010:30 Evening (Personal)
23:0011:00 PM06:00 UTC07:0002:0015:0011:30 Night

🏙️ World Clock in Different Cities

🇬🇧London Clock🇺🇸New York Clock🇯🇵Tokyo Clock🇫🇷Paris Clock🇦🇪Dubai Clock🇮🇳Mumbai Clock🇸🇬Singapore Clock🇺🇸Los Angeles Clock🇭🇰Hong Kong Clock🇩🇪Berlin Clock🇦🇺Sydney Clock🇷🇺Moscow Clock🇹🇭Bangkok Clock🇰🇷Seoul Clock🇹🇷Istanbul Clock🇨🇦Toronto Clock🇺🇸Chicago Clock🇺🇸San Francisco Clock🇮🇹Rome Clock🇪🇸Madrid Clock🇳🇱Amsterdam Clock🇨🇳Shanghai Clock🇮🇳Delhi Clock🇪🇬Cairo Clock🇲🇽Mexico City Clock

🌐 Interactive Timezone Converter Studio

Convert time offsets, schedule international meetings, and compare 24-hour schedules on a visual timeline.

⚡EST to MST⚡MST to EST

🌐 World Clock in Different Time Zones

🌐UTC Clock⏰EST Clock⏰PST Clock⏰CST Clock⏰MST Clock🌐GMT Clock🇮🇳IST Clock⏰CET Clock🇯🇵JST Clock🇦🇺AEDT Clock🇸🇬SGT Clock🇭🇰HKT Clock🇰🇷KST Clock⏰WIB Clock🇬🇧BST Clock⏰EET Clock

Overview & Capabilities

Mountain Standard Time (MST, UTC-7) covers the Rocky Mountain corridor of North America, including major hubs in Denver, Salt Lake City, and Phoenix (which observes MST year-round without DST).

Tutorial

How to Use

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Monitor Mountain West Time: Check current hours in Denver, Salt Lake City, and Calgary.
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Note Arizona DST Exemption: Most of Arizona does not observe DST and remains on MST (UTC-7) all year.
Capabilities

Key Features

Mountain Standard Atomic Clock: Precise UTC-7 timekeeping.
Pre-Rendered 24-Hour MST Matrix: Converts Mountain hours to NYC, London, Tokyo, and Los Angeles.
Applications

Common Use Cases

Aerospace & Telecommunications: Coordinate with defense and aerospace contractors in Colorado.
Rocky Mountain Tourism & Logistics: Schedule outdoor expeditions and ski resort operations.
Guidance

Tips & Best Practices

💡
Arizona Matches California in Summer: During PDT (summer), Arizona (MST) shares the exact same time as Los Angeles.
Ecosystem

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Greenwich Mean Time (GMT) Clock

Live Greenwich Mean Time (GMT UTC+0) clock. Exact time at the Prime Meridian, UTC vs GMT comparison, and 24-hour conversion chart.

Eastern Standard Time (EST) Clock

Eastern Standard Time (EST) Clock

Exact Eastern Standard Time (EST UTC-5 / EDT UTC-4) live clock. Wall Street NYSE hours, Eastern timezone schedule, and 24-hour time chart.

Pacific Standard Time (PST) Clock

Pacific Standard Time (PST) Clock

Live Pacific Standard Time (PST UTC-8 / PDT UTC-7) clock. Silicon Valley tech hours, Pacific daylight schedule, and 24-hour time conversion table.

Central Standard Time (CST) Clock

Central Standard Time (CST) Clock

Exact Central Standard Time (CST UTC-6 / CDT UTC-5) digital clock. Chicago CME trading hours, Central timezone schedule, and 24-hour time chart.

Answers

Frequently Asked Questions

Q What does MST stand for?

MST stands for **Mountain Standard Time**.

Q What is the UTC offset for MST?

MST is offset by **UTC-7 (Pairs with MDT UTC-6 in summer)**.

Q Which countries and regions use MST?

US Mountain West (Denver, Salt Lake City, Phoenix), Western Canada (Calgary, Edmonton).