MST to ART Time Converter

Convert Mountain Standard Time (MST) to Argentina Time (ART). Both time zones are shown live below; current offset between them is 3 hours ahead.

Denver · Mountain Standard Time
00:52:16
Wednesday, May 13, 2026
MDT · UTC-06:00
Buenos Aires · Argentina Time
03:52:16
Wednesday, May 13, 2026
GMT-3 · UTC-03:00

Convert a specific time

From: MST (Denver)
To: ART (Buenos Aires)
--:--

Daylight Saving status right now

MST (Mountain Standard Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-11-01
Offset shift
UTC-06:00 → UTC-07:00
ART (Argentina Time)
Observes DST
No

Heads up: MST observes DST while ART does not. The 3-hour difference shown above will shift by one hour when MST starts or ends DST.

When can MST and ART meet?

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
MST
ART
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Denver (MST). Each row shows the local working-hours state in that zone for the same moment in time.
5 hours of overlap during standard 9am-5pm working hours.
Best meeting window: 09:00–13:00 MST (12:00–16:00 ART).

Hour-by-hour MST to ART conversion table

MST time (Denver)ART time (Buenos Aires)Status
00:00 Wed03:00 WedOff-hours both sides
01:00 Wed04:00 WedOff-hours both sides
02:00 Wed05:00 WedOff-hours both sides
03:00 Wed06:00 WedOff-hours both sides
04:00 Wed07:00 WedOff-hours both sides
05:00 Wed08:00 WedOff-hours both sides
06:00 Wed09:00 WedART working
07:00 Wed10:00 WedART working
08:00 Wed11:00 WedART working
09:00 Wed12:00 WedBoth at work
10:00 Wed13:00 WedBoth at work
11:00 Wed14:00 WedBoth at work
12:00 Wed15:00 WedBoth at work
13:00 Wed16:00 WedBoth at work
14:00 Wed17:00 WedMST working
15:00 Wed18:00 WedMST working
16:00 Wed19:00 WedMST working
17:00 Wed20:00 WedOff-hours both sides
18:00 Wed21:00 WedOff-hours both sides
19:00 Wed22:00 WedOff-hours both sides
20:00 Wed23:00 WedOff-hours both sides
21:00 Wed00:00 ThuOff-hours both sides
22:00 Wed01:00 ThuOff-hours both sides
23:00 Wed02:00 ThuOff-hours both sides

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

Mountain Standard Time (MST)
IANA identifier
America/Denver
Current UTC offset
UTC-06:00
Current abbreviation
MDT
Major cities in this zone
DenverPhoenixSalt Lake CityAlbuquerque
Argentina Time (ART)
IANA identifier
America/Argentina/Buenos_Aires
Current UTC offset
UTC-03:00
Current abbreviation
GMT-3
Major cities in this zone
Buenos Aires

Sun today in Denver and Buenos Aires

Denver
Sunrise
05:49
Sunset
20:05
Solar noon
12:57
Daylight
14h 16m

Related converters

ART to MST (reverse)MST to ESTMST to PSTMST to GMTMST to UTCMST to CETEST to ARTPST to ARTGMT to ARTUTC to ARTCET to ART
Looking for local time? See time in Denver or time in Buenos Aires.

Frequently asked questions

What is the time difference between MST and ART right now?+
ART (Argentina Time) is currently 3 hours ahead MST (Mountain Standard Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does MST or ART observe daylight saving time?+
MST: observes daylight saving time. ART: does not observe daylight saving time.
When is the best time to schedule a meeting between MST and ART?+
The strongest overlap is 09:00–13:00 MST (12:00–16:00 ART), giving 5 hours when both sides are within standard 9am-5pm working hours.
What time is it in Buenos Aires when it is 12:00 noon in Denver?+
When it is 12:00 Wed in Denver (MST), it is 15:00 Wed in Buenos Aires (ART).
Which IANA time zone identifiers are used for MST and ART?+
MST maps to "America/Denver" in the IANA database. ART maps to "America/Argentina/Buenos_Aires". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Denver ahead of or behind Buenos Aires?+
Whether Denver (MST) is ahead of or behind Buenos Aires (ART) depends on the current UTC offsets. Right now ART is 3 hours ahead MST. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for MST and ART?+
MST is UTC-06:00 (MDT) and ART is UTC-03:00 (GMT-3). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both MST and ART?+
Yes. There are 5 hours of overlap during standard 9am-5pm working hours, with the strongest window at 09:00–13:00 MST.