EST to Buenos Aires time conversion

EST time

ESTUTC-5Not observed

Time in Buenos Aires

ARTUTC-3Not observed

Buenos Aires is 2 hours ahead of EST.

EST is always UTC-5. Right now most places that use EST are on EDT (UTC-4): Buenos Aires is 1 hour ahead of EDT.

Time difference with your location

EST is 5 hours behind UTC. Compare with your local time →

Choose a date and time

Choose the local time in EST to convert it to Buenos Aires on that date.

Buenos Aires to EST time conversion

Skipped clock-change times are unavailable; a repeated time uses its first occurrence.

24-hour conversion chart · EST → Buenos Aires

This table converts each hour in EST to Buenos Aires on 2026-10-21.

  • Working hours
  • Outside working hours
  • Night hours
ESTBuenos AiresShared working hours
00:0012:00 AM 02:002:00 AM
01:001:00 AM 03:003:00 AM
02:002:00 AM 04:004:00 AM
03:003:00 AM 05:005:00 AM
04:004:00 AM 06:006:00 AM
05:005:00 AM 07:007:00 AM
06:006:00 AM 08:008:00 AM
07:007:00 AM 09:009:00 AM
08:008:00 AM 10:0010:00 AM ✓
09:009:00 AM 11:0011:00 AM ✓
10:0010:00 AM 12:0012:00 PM ✓
11:0011:00 AM 13:001:00 PM ✓
12:0012:00 PM 14:002:00 PM ✓
13:001:00 PM 15:003:00 PM ✓
14:002:00 PM 16:004:00 PM ✓
15:003:00 PM 17:005:00 PM ✓
16:004:00 PM 18:006:00 PM
17:005:00 PM 19:007:00 PM
18:006:00 PM 20:008:00 PM
19:007:00 PM 21:009:00 PM
20:008:00 PM 22:0010:00 PM
21:009:00 PM 23:0011:00 PM
22:0010:00 PM 00:0012:00 AM +1 day
23:0011:00 PM 01:001:00 AM +1 day

Quick conversion examples

These examples use EST (UTC-5) and Buenos Aires (UTC-3); choosing a date applies the local clock changes.

Conversion formula: Buenos Aires = EST + 2h · EDT + 1h.

ESTBuenos Aires
6:00 AM EST= 8:00 AM Buenos Aires
7:00 AM EST= 9:00 AM Buenos Aires
8:00 AM EST= 10:00 AM Buenos Aires
9:00 AM EST= 11:00 AM Buenos Aires
10:00 AM EST= 12:00 PM Buenos Aires
12:00 PM EST= 2:00 PM Buenos Aires
3:00 PM EST= 5:00 PM Buenos Aires
5:00 PM EST= 7:00 PM Buenos Aires
6:00 PM EST= 8:00 PM Buenos Aires
8:00 PM EST= 10:00 PM Buenos Aires

Overlapping meeting hours

The 08:00–18:00 working day in EST and Buenos Aires overlaps for 8 hours on 2026-10-21.

Shared working hours
08:00–16:00 EST · 10:00–18:00 Buenos Aires

Clock changes on both sides, 2026–2028

EST and Buenos Aires have the following local clock changes in 2026–2028; all times in the table are local to that side.

YearESTBuenos Aires
2026

· 02:00 → 03:00
UTC-5 → UTC-4

· 02:00 → 01:00
UTC-4 → UTC-5

 No clock changes; UTC-3 all year.
2027

· 02:00 → 03:00
UTC-5 → UTC-4

· 02:00 → 01:00
UTC-4 → UTC-5

 No clock changes; UTC-3 all year.
2028

· 02:00 → 03:00
UTC-5 → UTC-4

· 02:00 → 01:00
UTC-4 → UTC-5

 No clock changes; UTC-3 all year.

At the start of 2026, Buenos Aires is 2 hours ahead of EST. The difference changes during the following periods.

  • From 2026-03-08 03:00 EDT until 2026-11-01 01:00 EST, Buenos Aires is 1 hour ahead of EDT.
  • From 2027-03-14 03:00 EDT until 2027-11-07 01:00 EST, Buenos Aires is 1 hour ahead of EDT.
  • From 2028-03-12 03:00 EDT until 2028-11-05 01:00 EST, Buenos Aires is 1 hour ahead of EDT.

Frequently asked questions

What time is 9 AM EST in Buenos Aires?

9:00 AM EST = 11:00 AM Buenos Aires, using UTC-5 and UTC-3. Choose a date above for the seasonal local time.

Does the time difference between EST and Buenos Aires change during the year?

Yes. During 2026–2028: Buenos Aires is 1 hour ahead of EST; Buenos Aires is 2 hours ahead of EST. The clock-change table gives the dates for both sides.

How do I tell whether it is day or night in Buenos Aires?

Read the Buenos Aires clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.

What is the best time to call between EST and Buenos Aires?

The shared 08:00–18:00 working window is 08:00–16:00 EST / 10:00–18:00 Buenos Aires, a total of 8 hours.

What is the time difference between EST and Buenos Aires now?

Right now, Buenos Aires is 2 hours ahead of EST. Conversion formula: Buenos Aires = EST + 2h · EDT + 1h.