The short answer
1am in Mountain Standard Time is 4am in Buenos Aires.
Mountain Standard Time is 3 hours behind Buenos Aires. It lands deep outside working hours in Buenos Aires — see the best time to meet below for a friendlier slot.
Mountain Standard Time☾
1am
Buenos Aires☾
4am
Right now
2:05amMDT · UTC-06:00 · Mon, Jun 22
5:05am-03:00 · UTC-03:00 · Mon, Jun 22
Read across to convert
Mountain Standard Time
MDT · UTC-06:00
Buenos Aires
-03:00 · UTC-03:00
Pinned1amMountain Standard Time=4amBuenos Aires
12amMon
3am
PINNED
1am
4am
NOW
2am
5am
3am
6am
4am
7am
5am
8am
6am
9am
WORK7am
10am
WORK8am
11am
WORK9am
WORK12pm
WORK10am
WORK1pm
WORK11am
WORK2pm
WORK12pm
WORK3pm
WORK1pm
WORK4pm
WORK2pm
WORK5pm
3pm
WORK6pm
4pm
WORK7pm
5pm
8pm
6pm
9pm
7pm
10pm
8pm
11pm
9pm
12amTue ·+1d
10pm
1amTue ·+1d
11pm
2amTue ·+1d
daylightnightworking hoursoverlap
Best time to meet=
Best for a call
Mountain Standard Time
9am–2pm
Buenos Aires
12pm–5pm
Popular conversions
Quick reference.
9amMountain Standard Time=12pmBuenos Aires
12pmMountain Standard Time=3pmBuenos Aires
3pmMountain Standard Time=6pmBuenos Aires
5pmMountain Standard Time=8pmBuenos Aires
9pmMountain Standard Time=12amBuenos Aires · next day
In context
What each side covers.
Mountain Standard Time
2:05amMDT · UTC-06:00
Cities on this clock
Buenos Aires
5:05am-03:00 · UTC-03:00
Cities on this clock
Related converters
Other popular pairs.
Pacific Time
1:05am
India Standard Time
1:35pm
Pacific Time to India12 hours 30 minutes behind
Eastern Standard Time
4:05am
Central European Time
10:05am
Eastern Time to Central Europe6 hours behind
India Standard Time
1:35pm
Eastern Standard Time
4:05am
India to Eastern Time9 hours 30 minutes ahead
Greenwich Mean Time
9:05am
India Standard Time
1:35pm
London to India4 hours 30 minutes behind
Pacific Standard Time
1:05am
Eastern Standard Time
4:05am
Pacific to Eastern Time3 hours behind
Central European Time
10:05am
India Standard Time
1:35pm
Central Europe to India3 hours 30 minutes behind
Frequently asked
Quick answers about converting between Mountain Standard Time and Buenos Aires. Can't find what you need? Email [email protected].
- What is the time difference between Mountain Standard Time and Buenos Aires?
- Mountain Standard Time is 3 hours behind Buenos Aires right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
- When it's 1am in Mountain Standard Time, what time is it in Buenos Aires?
- 1am in Mountain Standard Time is 4am in Buenos Aires. It lands deep outside working hours in Buenos Aires — see the best time to meet below for a friendlier slot. Use the hour-by-hour table above to read any other time across.
- What's the best time for a call between Mountain Standard Time and Buenos Aires?
- 9am–2pm in Mountain Standard Time lines up with 12pm–5pm in Buenos Aires — both sides are inside a 9-to-5 working day.
- Does this account for daylight saving time?
- Yes. We track every clock change in both places, so the abbreviations you see — MDT and -03:00 — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
- Why is the date sometimes different on each side?
- When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.