Buenos Aires to San Isidro: time difference
San Isidro is 3 h behind Buenos Aires. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Buenos Aires 09:32 9:32 AM San Isidro 06:32 6:32 AM You –:–
09:32 9:32 AM
Argentina Standard Time · UTC-3
☀️ 06:07 · 🌙 19:11
06:32 6:32 AM
Central Standard Time · UTC-6
☀️ 05:25 · 🌙 17:18
·
−3 h
San Isidro is 3 h behind Buenos Aires.
When you, Buenos Aires and San Isidro are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇦🇷 Buenos Aires
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇨🇷 San Isidro
21 9 PM 22 10 PM 23 11 PM 0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇦🇷 Buenos Aires | 🇨🇷 San Isidro |
|---|---|---|
| Local time | 09:32 | 06:32 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Argentina Standard Time | Central Standard Time |
| UTC offset | UTC-3 | UTC-6 |
| Offset from Buenos Aires | — | −3 h |
| IANA zone | America/Argentina/Buenos Aires | America/Costa Rica |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:07 | 05:25 |
| Sunset | 19:11 | 17:18 |
| Daylight | 13 h 4 min | 11 h 53 min |
| People on this clock | 2,891,082 | 17,000 |
Compare Buenos Aires with another city
More comparisons with Buenos Aires: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Buenos Aires and San Isidro: common questions
How far behind Buenos Aires is San Isidro?
San Isidro is 3 hours behind Buenos Aires: UTC−6 against UTC−3.
What time is it in San Isidro at the start of the working day in Buenos Aires?
The working day in Buenos Aires starts at 9:00 AM; in San Isidro it is 6:00 AM at that moment.
What time is it in San Isidro when it is 6:00 PM in Buenos Aires?
When it is 6:00 PM in Buenos Aires, it is 3:00 PM in San Isidro.
Is there a time when both Buenos Aires and San Isidro are at work?
Yes: from 12:00 PM to 6:00 PM in Buenos Aires (9:00 AM to 3:00 PM in San Isidro), the working days (9:00 AM–6:00 PM) overlap.
When is it still the previous day in San Isidro?
Until 3:00 AM in Buenos Aires it is still the previous day in San Isidro. The other way round, from 9:00 PM in San Isidro it is already the next day in Buenos Aires.
Does the time gap between Buenos Aires and San Isidro change during the year?
No, the clocks change neither in Buenos Aires nor in San Isidro, so the gap is 3 hours all year round.
