Buenos Aires to San Juan: time difference
San Juan is 1 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 08:54 8:54 AM San Juan 07:54 7:54 AM You –:–
08:54 8:54 AM
Argentina Standard Time · UTC-3
☀️ 06:09 · 🌙 19:11
07:54 7:54 AM
Atlantic Standard Time · UTC-4
☀️ 05:55 · 🌙 17:48
·
−1 h
San Juan is 1 h behind Buenos Aires.
When you, Buenos Aires and San Juan 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 Juan
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 21 9 PM 22 10 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇦🇷 Buenos Aires | 🇹🇹 San Juan |
|---|---|---|
| Local time | 08:54 | 07:54 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Argentina Standard Time | Atlantic Standard Time |
| UTC offset | UTC-3 | UTC-4 |
| Offset from Buenos Aires | — | −1 h |
| IANA zone | America/Argentina/Buenos Aires | America/Port of Spain |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:09 | 05:55 |
| Sunset | 19:11 | 17:48 |
| Daylight | 13 h 2 min | 11 h 52 min |
| People on this clock | 2,891,082 | — |
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 Juan: common questions
How many hours behind Buenos Aires is San Juan?
The clocks in San Juan are 1 hour behind those in Buenos Aires (UTC−4 and UTC−3).
If it is 9:00 AM in Buenos Aires, what time is it in San Juan?
At 9:00 AM in Buenos Aires, clocks in San Juan show 8:00 AM.
If it is 6:00 PM in Buenos Aires, what time is it in San Juan?
At 6:00 PM in Buenos Aires, clocks in San Juan show 5:00 PM.
Is there a time when both Buenos Aires and San Juan are at work?
Yes: from 10:00 AM to 6:00 PM in Buenos Aires (9:00 AM to 5:00 PM in San Juan), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in San Juan compared with Buenos Aires?
The new day starts in San Juan later: until 1:00 AM in Buenos Aires, it is still the previous day there. From 11:00 PM in San Juan, Buenos Aires is already on the next day.
Does the time gap between Buenos Aires and San Juan change during the year?
No, the clocks change neither in Buenos Aires nor in San Juan, so the gap is 1 hour all year round.
