San Lorenzo to Buenos Aires: time difference
Buenos Aires is 1 h ahead of San Lorenzo. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇦🇷 Buenos Aires, Argentina
11
- Argentina Standard Time
- UTC-3
- Daytime
☀️ 05:57 · 🌙 19:19 · 13 h 22 min
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
San Lorenzo 08:09 8:09 AM Buenos Aires 09:09 9:09 AM You –:–
08:09 8:09 AM
Atlantic Standard Time · UTC-4
☀️ 06:22 · 🌙 17:54
09:09 9:09 AM
Argentina Standard Time · UTC-3
☀️ 05:57 · 🌙 19:19
·
+1 h
Buenos Aires is 1 h ahead of San Lorenzo.
When you, San Lorenzo 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 Lorenzo
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
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 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇵🇷 San Lorenzo | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 08:09 | 09:09 |
| Local date | Wednesday, October 28, 2026 | Wednesday, October 28, 2026 |
| Time zone | Atlantic Standard Time | Argentina Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from San Lorenzo | — | +1 h |
| IANA zone | America/Puerto Rico | America/Argentina/Buenos Aires |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:22 | 05:57 |
| Sunset | 17:54 | 19:19 |
| Daylight | 11 h 32 min | 13 h 22 min |
| People on this clock | 9,373 | 2,891,082 |
Compare San Lorenzo with another city
More comparisons with San Lorenzo: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
San Lorenzo and Buenos Aires: common questions
What is the time difference between San Lorenzo and Buenos Aires?
Buenos Aires is 1 hour ahead: it uses UTC−3, while San Lorenzo is on UTC−4.
What time is it in Buenos Aires at the start of the working day in San Lorenzo?
The working day in San Lorenzo starts at 9:00 AM; in Buenos Aires it is 10:00 AM at that moment.
What time is it in Buenos Aires when it is 6:00 PM in San Lorenzo?
When it is 6:00 PM in San Lorenzo, it is 7:00 PM in Buenos Aires.
Is there a time when both San Lorenzo and Buenos Aires are at work?
Yes: from 9:00 AM to 5:00 PM in San Lorenzo (10:00 AM to 6:00 PM in Buenos Aires), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Buenos Aires compared with San Lorenzo?
The new day starts in Buenos Aires earlier: at 11:00 PM in San Lorenzo it is already midnight there. Until 1:00 AM in Buenos Aires, San Lorenzo is still on the previous day.
Does the time difference between San Lorenzo and Buenos Aires change?
No. Neither place uses daylight saving time, so the difference stays 1 hour all year.
