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.

Chile to MST

-4h

Chile

CLSTSOURCE

UTC-03:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

MST

UTC-06:00☀ DST active

HH08

MM00

08:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Chile

MST

12:00 AM

9:00 PM-1

2:00 AM

11:00 PM-1

4:00 AM

1:00 AM

6:00 AM

3:00 AM

8:00 AM

5:00 AM

10:00 AM

7:00 AM

12:00 PM

9:00 AM

2:00 PM

11:00 AM

4:00 PM

1:00 PM

6:00 PM

3:00 PM

8:00 PM

5:00 PM

10:00 PM

7:00 PM

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

CLST and MST on the World Map

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

CLST Zone

→

MST Zone

Explore all world timezones interactively →

CLT – Chile Standard Time

UTC-04:00

Chile Standard Time (CLT) is the time zone for continental Chile, 4 hours behind UTC.

Countries in CLT

Chile

Major Cities in CLT

SantiagoValparaísoConcepciónViña del MarAntofagasta

Key Facts about CLT

•Chile observes daylight saving time, switching to CLST (UTC-03:00) in summer.
•Santiago is the largest city in Chile with over 6 million in the metro area.
•Chile spans over 4,300 km from north to south but uses one timezone.

Daylight Saving:Yes – switches to CLST

Learn more about CLT 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

Comparing Time Zones: Chile and MST

Chile runs on Chile Summer Time (CLST) at UTC-03:00, currently observing daylight saving time. MST runs on Mountain Standard Time (MST) at UTC-07:00. That puts Chile 4 hours behind MST — a difference of -4h at the current offsets.

In practice, when it is 9:00 AM in Chile it is 5:00 AM in MST. Midnight in Chile is 8:00 PM in MST.Chile observes daylight saving time while MST does not, so the gap narrows or widens by an hour part of the year.

Chile to MST time conversion table

Chile (CLST)	MST (MST)	Day
12:00 AM	8:00 PM	previous day
6:00 AM	2:00 AM	same day
7:00 AM	3:00 AM	same day
8:00 AM	4:00 AM	same day
9:00 AM	5:00 AM	same day
12:00 PM	8:00 AM	same day
3:00 PM	11:00 AM	same day
5:00 PM	1:00 PM	same day
6:00 PM	2:00 PM	same day
9:00 PM	5:00 PM	same day

Why people convert Chile to MST time

Scheduling a call from Chile to MST: a 10:00 AM start in Chile lands at 6:00 AM in MST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Chile and MST are inside the 9-to-5 working day between 1:00 PM and 5:00 PM CLST time (9:00 AM–1:00 PM MST). That is roughly 4 hours of usable overlap.
Booking travel or deliveries: tracking MST local time against Chile keeps pickup windows and arrival estimates honest across the -4h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM CLST" is unambiguous; "3 PM" across a -4h gap is not.
Block 1:00 PM–5:00 PM CLST as the recurring meeting window if you work primarily from Chile and need MST colleagues present.
Chile: Clocks fall back on Sun, Apr 4, 2027. Re-check this page after that date because the offset changes and so does the -4h gap.

About CLT (Chile Standard Time)

Chile Standard Time (CLT) is the standard time in Chile. During summer months (October to March), Chile switches to Chile Summer Time (CLST, UTC-03:00). Chile is the longest north-south country in the world.

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 Chile and MST

Both Chile and MST sit inside the 9 AM – 5 PM working day between 1:00 PM–5:00 PM CLST, which is 9:00 AM–1:00 PM MST. That gives roughly 4 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

Chile and MST overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.

Chile is 4 hours behind MST (CLST UTC-03:00 → MST UTC-07:00). The shared working window is 1:00 PM–5:00 PM CLST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Chile

☀ Currently in DST

Standard: UTC-04:00 · DST: UTC-03:00

Clocks fall back on Sun, Apr 4, 2027

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 Chile and MST?

Chile (CLST, UTC-03:00) is 4 hours behind MST (MST, UTC-07:00). The gap is currently -4h.

How do I convert Chile time to MST time?

Add -4h to Chile local time. For example, 9:00 AM in Chile is 5:00 AM in MST.

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 -4h offset from Chile.

What is the best time to call MST from Chile?

Call between 1:00 PM and 5:00 PM CLST — that maps to 9:00 AM–1:00 PM MST and keeps both parties inside the working day.

Which is behind, Chile or MST?

Chile is 4 hours behind MST. When it is 12:00 PM in Chile it is 8:00 AM in MST.

Do Chile and MST use different time zones?

Chile (Chile) uses CLST at UTC-03:00, while MST uses MST at UTC-07:00. The IANA identifiers are America/Santiago and America/Denver.

Does daylight saving time affect the Chile–MST difference?

Yes at the moment: Chile is on daylight saving time and MST is not, so the -4h gap shifts by an hour when exactly one of them changes clocks.

Which other cities share Chile's time zone?

CLST also covers Santiago, Valparaíso, Concepción, Viña del Mar, Antofagasta.

Which countries use CLST, Chile's zone?

CLST is used in Chile.

Is there a day difference between Chile and MST?

Not normally. The -4h gap only pushes the date over the previous day.

What is the time difference between Chile and MST?

MST is -4h from Chile.

What timezone is Chile in?

Chile operates on its local timezone.

What timezone is MST in?

MST operates on its local timezone.

Which countries use CLT (Chile Standard Time)?

CLT is used in Chile.

Does CLT observe daylight saving time?

Yes, CLT switches to CLST during summer months.

What are some interesting facts about CLT?

Chile observes daylight saving time, switching to CLST (UTC-03:00) in summer. Santiago is the largest city in Chile with over 6 million in the metro area.

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.