San Juan to Buenos Aires: time difference
Buenos Aires is 3 h ahead of San Juan. 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 Juan 05:34 5:34 AM Buenos Aires 08:34 8:34 AM You –:–
05:34 5:34 AM
Central Standard Time · UTC-6
☀️ 05:26 · 🌙 17:18
08:34 8:34 AM
Argentina Standard Time · UTC-3
☀️ 06:07 · 🌙 19:11
·
+3 h
Buenos Aires is 3 h ahead of San Juan.
When you, San Juan 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 Juan
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 Juan | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 05:34 | 08:34 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Central Standard Time | Argentina Standard Time |
| UTC offset | UTC-6 | UTC-3 |
| Offset from San Juan | — | +3 h |
| IANA zone | America/Costa Rica | America/Argentina/Buenos Aires |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:26 | 06:07 |
| Sunset | 17:18 | 19:11 |
| Daylight | 11 h 53 min | 13 h 4 min |
| People on this clock | 27,000 | 2,891,082 |
Compare San Juan with another city
More comparisons with San Juan: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
San Juan and Buenos Aires: common questions
How many hours ahead of San Juan is Buenos Aires?
The clocks in Buenos Aires are 3 hours ahead of those in San Juan (UTC−3 and UTC−6).
If it is 9:00 AM in San Juan, what time is it in Buenos Aires?
At 9:00 AM in San Juan, clocks in Buenos Aires show 12:00 PM.
What time is it in Buenos Aires when it is 6:00 PM in San Juan?
When it is 6:00 PM in San Juan, it is 9:00 PM in Buenos Aires.
When is a good time to call Buenos Aires from San Juan?
Between 9:00 AM and 3:00 PM in San Juan – that is 12:00 PM to 6:00 PM in Buenos Aires – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Buenos Aires?
From 9:00 PM in San Juan 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 Juan.
Does the time difference between San Juan and Buenos Aires change?
No. Neither place uses daylight saving time, so the difference stays 3 hours all year.
