What's the current time difference between MST and Buenos Aires?

Right now, Buenos Aires (Buenos Aires) is +3h relative to MST (MST · Mountain Time). The number is live and reflects the current daylight-saving status of both zones.

Does this converter account for daylight saving time?

Yes. The math is done against IANA's tz database via Intl.DateTimeFormat, so DST shifts in either zone show up immediately at the transition. Around DST boundaries the conversion can move by an hour from one week to the next — this page always reflects the current rule.

Why does the TO column sometimes show "+1d" or "−1d"?

When the MST hour lands on a different calendar day in Buenos Aires, we flag it so you don't accidentally schedule a meeting on the wrong date. MST 11 PM is often the next day in eastern-hemisphere zones, for example.

How do I schedule a meeting that works for both zones?

Look at the row highlighted lume green — that's the longest contiguous block where both MST and Buenos Aires are in standard working hours (9 AM–5 PM local). Open the planner from the link above to lock a specific time and share a DST-stable link with the other party.

MST to Buenos Aires

MST · Mountain Time ↔ Buenos Aires. Right now, Buenos Aires is +3h relative to MST. DST is honored live.

From

MST

—

Buenos Aires

—

00:00MST hour of day23:30

Live offset

+3h

MST (May 23) ↔ Buenos Aires (May 23)

If MST or Buenos Aires just shifted for daylight saving, that's already reflected.

Best meeting overlap

9:00 AM – 1:00 PM

MST time. Equivalent Buenos Aires: 12:00 PM – 4:00 PM

Working hours = 9 AM – 5 PM in each zone.

Hour-by-hour

MST → Buenos Aires, every hour

MST · May 23Buenos Aires · May 23

12:00 AM3:00 AM
1:00 AM4:00 AM
2:00 AM5:00 AM
3:00 AM6:00 AM
4:00 AM7:00 AM
5:00 AM8:00 AM
6:00 AM9:00 AM
7:00 AM10:00 AM
8:00 AM11:00 AM
9:00 AM12:00 PM
10:00 AM1:00 PM
11:00 AM2:00 PM
12:00 PM3:00 PM
1:00 PM4:00 PM
2:00 PM5:00 PM
3:00 PM6:00 PM
4:00 PM7:00 PM
5:00 PM8:00 PM
6:00 PM9:00 PM
7:00 PM10:00 PM
8:00 PM11:00 PM
9:00 PM+1d12:00 AM
10:00 PM+1d1:00 AM
11:00 PM+1d2:00 AM

Both zones in working hours±1d = the TO side lands on a different calendar day

FAQ

MST ↔ Buenos Aires, questions answered

What's the current time difference between MST and Buenos Aires?: Right now, Buenos Aires (Buenos Aires) is +3h relative to MST (MST · Mountain Time). The number is live and reflects the current daylight-saving status of both zones.
Does this converter account for daylight saving time?: Yes. The math is done against IANA's tz database via Intl.DateTimeFormat, so DST shifts in either zone show up immediately at the transition. Around DST boundaries the conversion can move by an hour from one week to the next — this page always reflects the current rule.
Why does the TO column sometimes show "+1d" or "−1d"?: When the MST hour lands on a different calendar day in Buenos Aires, we flag it so you don't accidentally schedule a meeting on the wrong date. MST 11 PM is often the next day in eastern-hemisphere zones, for example.
How do I schedule a meeting that works for both zones?: Look at the row highlighted lume green — that's the longest contiguous block where both MST and Buenos Aires are in standard working hours (9 AM–5 PM local). Open the planner from the link above to lock a specific time and share a DST-stable link with the other party.

Reverse — Buenos Aires to MST Time in Buenos Aires Open in planner