Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

Ho Chi Minh to MST

-14h

Ho Chi Minh

ICTSOURCE

Vietnam · UTC+07:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

MST

UTC-06:00☀ DST active

HH10

MM00

(previous day)22:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Ho Chi Minh

MST

12:00 AM

11:00 AM-1

2:00 AM

1:00 PM-1

4:00 AM

3:00 PM-1

6:00 AM

5:00 PM-1

8:00 AM

7:00 PM-1

10:00 AM

9:00 PM-1

12:00 PM

11:00 PM-1

2:00 PM

1:00 AM

4:00 PM

3:00 AM

6:00 PM

5:00 AM

8:00 PM

7:00 AM

10:00 PM

9:00 AM

Green rows indicate typical business hours (9 AM - 5 PM)

ICT and MST on the World Map

The map below highlights the ICT (Indochina Time) and MST (Mountain Standard Time) timezone regions across the globe.

ICT Zone

→

MST Zone

Explore all world timezones interactively →

ICT – Indochina Time

UTC+07:00

Indochina Time (ICT) is the time zone for Vietnam, Thailand, Laos, and Cambodia, 7 hours ahead of UTC.

Countries in ICT

ThailandVietnamCambodiaLaosIndonesia (WIB)

Major Cities in ICT

BangkokHo Chi Minh CityHanoiJakartaPhnom PenhVientiane

Key Facts about ICT

•Bangkok is one of the most visited cities in the world.
•ICT is 12 hours ahead of EST.
•Thailand, Vietnam, and Cambodia all share ICT.

Daylight Saving:No – UTC+07:00 year-round

Learn more about ICT on Wikipedia

MST – Mountain Standard Time

UTC-07:00

Mountain Standard Time (MST) is the time zone for the Mountain region of North America, 7 hours behind UTC.

Countries in MST

United States (Mountain)Canada (Alberta)Mexico (Chihuahua, Sonora)

Major Cities in MST

DenverPhoenixSalt Lake CityCalgaryEdmontonAlbuquerqueEl PasoTucsonBoiseCiudad Juárez

Key Facts about MST

•Arizona does not observe daylight saving time, staying on MST year-round.
•The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
•Denver, the 'Mile High City', is the largest city fully in MST.
•MST covers 6 US states entirely and parts of several others.

Daylight Saving:Yes – switches to MDT

Learn more about MST on Wikipedia

About Ho Chi Minh

Wikipedia

Ho Chi Minh City operates on Indochina Time (ICT), UTC+7. As Vietnam's economic powerhouse and a manufacturing hub, Saigon drives Southeast Asian trade.

Population:9 million

Metro:13 million

Business Hours:8:00 AM - 5:00 PM ICT

Currency:VND (₫)

Stock Exchange:HOSE (Ho Chi Minh Stock Exchange)

Key Landmarks

Notre-Dame CathedralWar Remnants MuseumBen Thanh MarketIndependence PalaceCu Chi Tunnels

Did You Know?

The city has over 5 million motorbikes, outnumbering cars significantly.

Learn more about ICT timezone →

Everything You Need to Know About Ho Chi Minh and MST Time

Ho Chi Minh runs on Indochina Time (ICT) at UTC+07:00. MST runs on Mountain Standard Time (MST) at UTC-07:00. That puts Ho Chi Minh 14 hours behind MST — a difference of -14h at the current offsets.

In practice, when it is 9:00 AM in Ho Chi Minh it is 7:00 PM in MST on the previous day. Midnight in Ho Chi Minh is 10:00 AM in MST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Ho Chi Minh to MST time conversion table

Ho Chi Minh (ICT)	MST (MST)	Day
12:00 AM	10:00 AM	previous day
6:00 AM	4:00 PM	previous day
7:00 AM	5:00 PM	previous day
8:00 AM	6:00 PM	previous day
9:00 AM	7:00 PM	previous day
12:00 PM	10:00 PM	previous day
3:00 PM	1:00 AM	same day
5:00 PM	3:00 AM	same day
6:00 PM	4:00 AM	same day
9:00 PM	7:00 AM	same day

Why people convert Ho Chi Minh to MST time

Scheduling a call from Ho Chi Minh to MST: a 10:00 AM start in Ho Chi Minh lands at 8:00 PM in MST the previous day, so you can confirm the slot without doing the arithmetic yourself.
Handling a -14h gap: Ho Chi Minh and MST have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in MST is 7:00 PM in Ho Chi Minh.
Keeping family and friends in sync: knowing that 8:00 PM in Ho Chi Minh is 6:00 AM in MST makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM ICT" is unambiguous; "3 PM" across a -14h gap is not.
With a -14h gap there is no shared 9-to-5 window, so alternate the early start: one week Ho Chi Minh takes the early slot, the next week MST does.

About ICT (Indochina Time)

Indochina Time (ICT) is used across Southeast Asia including Vietnam, Thailand, Laos, and Cambodia. Indonesia (Western time, WIB) also uses UTC+07:00. ICT does not observe daylight saving time.

About MST (Mountain Standard Time)

Mountain Standard Time (MST) covers the Rocky Mountain region of the United States and Canada. Arizona is notable for not observing daylight saving time, staying on MST year-round (except the Navajo Nation). The time zone includes major cities like Denver, Phoenix, Calgary, and Salt Lake City. During summer, most areas switch to Mountain Daylight Time (MDT, UTC-06:00).

Best time to call between Ho Chi Minh and MST

With a -14h offset there is no overlap inside a normal 9 AM – 5 PM day. MST opens at 9:00 AM MST, which is 7:00 PM in Ho Chi Minh, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Ho Chi Minh and MST have no shared working hours because of the -14h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Ho Chi Minh is 14 hours behind MST (ICT UTC+07:00 → MST UTC-07:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Ho Chi Minh

Does not observe DST

MST

☀ Currently in DST

Standard: UTC-07:00 · DST: UTC-06:00

Clocks fall back on Sun, Nov 1, 2026

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Ho Chi Minh and MST?

Ho Chi Minh (ICT, UTC+07:00) is 14 hours behind MST (MST, UTC-07:00). The gap is currently -14h.

How do I convert Ho Chi Minh time to MST time?

Add -14h to Ho Chi Minh local time. For example, 9:00 AM in Ho Chi Minh is 7:00 PM in MST (previous day).

What time is it in MST right now?

MST uses MST at UTC-07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -14h offset from Ho Chi Minh.

What is the best time to call MST from Ho Chi Minh?

There is no shared working-hours window because of the -14h gap. The closest option is 1:00 PM in Ho Chi Minh, which is 11:00 PM in MST.

Which is behind, Ho Chi Minh or MST?

Ho Chi Minh is 14 hours behind MST. When it is 12:00 PM in Ho Chi Minh it is 10:00 PM in MST.

Do Ho Chi Minh and MST use different time zones?

Ho Chi Minh (Vietnam) uses ICT at UTC+07:00, while MST uses MST at UTC-07:00. The IANA identifiers are Asia/Ho_Chi_Minh and America/Denver.

Does daylight saving time affect the Ho Chi Minh–MST difference?

Neither zone observes daylight saving time, so the -14h offset between Ho Chi Minh and MST is fixed all year.

Which other cities share Ho Chi Minh's time zone?

ICT also covers Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.

Which countries use ICT, Ho Chi Minh's zone?

ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).

Is there a day difference between Ho Chi Minh and MST?

Sometimes. The -14h gap is large enough that 8:00 PM or later in Ho Chi Minh already falls on the in MST.

What is the time difference between Ho Chi Minh and MST?

MST is -14h from Ho Chi Minh.

What timezone is Ho Chi Minh in?

Ho Chi Minh City operates on Indochina Time (ICT), UTC+7. As Vietnam's economic powerhouse and a manufacturing hub, Saigon drives Southeast Asian trade.

What timezone is MST in?

MST operates on its local timezone.

What are the business hours in Ho Chi Minh?

Standard business hours in Ho Chi Minh are 8:00 AM - 5:00 PM ICT.

Which countries use ICT (Indochina Time)?

ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).

Does ICT observe daylight saving time?

No, ICT does not observe daylight saving time and remains at UTC+07:00 year-round.

What are some interesting facts about ICT?

Bangkok is one of the most visited cities in the world. ICT is 12 hours ahead of EST.

Which cities are in the MST timezone?

Major cities in the MST timezone include Denver, Phoenix, Salt Lake City, Calgary, Edmonton, Albuquerque, El Paso, Tucson.

What is the UTC offset for MST?

Mountain Standard Time (MST) is at UTC-07:00. During daylight saving time, it shifts to MDT.

What should I know about the MST timezone?

Arizona does not observe daylight saving time, staying on MST year-round. The Navajo Nation in Arizona does observe DST, unlike the rest of the state.