San Jose to Buenos Aires: time difference
Buenos Aires is 3 h ahead of San Jose. Live clocks for both, the working hours they share, and how each one sits against your own time.
+3 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
San Jose 19:07 7:07 PM Buenos Aires 22:07 10:07 PM You –:–
19:07 7:07 PM
Central Standard Time · UTC-6
☀️ 05:25 · 🌙 17:23
22:07 10:07 PM
Argentina Standard Time · UTC-3
☀️ 06:20 · 🌙 19:03
·
+3 h
Buenos Aires is 3 h ahead of San Jose.
When you, San Jose and Buenos Aires are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇷 San Jose
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
🇦🇷 Buenos Aires
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 0 12 AM 1 1 AM 2 2 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇷 San Jose | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 19:07 | 22:07 |
| Local date | Friday, October 9, 2026 | Friday, October 9, 2026 |
| Time zone | Central Standard Time | Argentina Standard Time |
| UTC offset | UTC-6 | UTC-3 |
| Offset from San Jose | — | +3 h |
| IANA zone | America/Costa Rica | America/Argentina/Buenos Aires |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:25 | 06:20 |
| Sunset | 17:23 | 19:03 |
| Daylight | 11 h 58 min | 12 h 43 min |
| People on this clock | 342,188 | 2,891,082 |
Compare San Jose with another city
More comparisons with San Jose: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
San Jose and Buenos Aires: common questions
What is the time difference between San Jose and Buenos Aires?
Buenos Aires is 3 hours ahead: it uses UTC−3, while San Jose is on UTC−6.
What time is it in Buenos Aires at the start of the working day in San Jose?
The working day in San Jose starts at 9:00 AM; in Buenos Aires it is 12:00 PM at that moment.
What time is it in Buenos Aires when it is 6:00 PM in San Jose?
When it is 6:00 PM in San Jose, it is 9:00 PM in Buenos Aires.
Is there a time when both San Jose and Buenos Aires are at work?
Yes: from 9:00 AM to 3:00 PM in San Jose (12:00 PM to 6:00 PM in Buenos Aires), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Buenos Aires?
From 9:00 PM in San Jose it is already the next day in Buenos Aires. The other way round, until 3:00 AM in Buenos Aires it is still the previous day in San Jose.
Does the time gap between San Jose and Buenos Aires change during the year?
No, the clocks change neither in San Jose nor in Buenos Aires, so the gap is 3 hours all year round.
