St Lucia to Buenos Aires: time difference
Buenos Aires is 1 h ahead of St Lucia. Live clocks for both, the working hours they share, and how each one sits against your own time.
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
St Lucia 22:35 10:35 PM Buenos Aires 23:35 11:35 PM You –:–
22:35 10:35 PM
Atlantic Standard Time · UTC-4
☀️ 05:55 · 🌙 17:49
23:35 11:35 PM
Argentina Standard Time · UTC-3
☀️ 06:20 · 🌙 19:03
·
+1 h
Buenos Aires is 1 h ahead of St Lucia.
When you, St Lucia 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
🇱🇨 St Lucia
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 | 🇱🇨 St Lucia | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 22:35 | 23:35 |
| Local date | Friday, October 9, 2026 | Friday, October 9, 2026 |
| Time zone | Atlantic Standard Time | Argentina Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from St Lucia | — | +1 h |
| IANA zone | America/St Lucia | America/Argentina/Buenos Aires |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:55 | 06:20 |
| Sunset | 17:49 | 19:03 |
| Daylight | 11 h 54 min | 12 h 43 min |
| People on this clock | 1,355 | 2,891,082 |
Compare St Lucia with another city
More comparisons with St Lucia: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
St Lucia and Buenos Aires: common questions
How far ahead of St Lucia is Buenos Aires?
Buenos Aires is 1 hour ahead of St Lucia: UTC−3 against UTC−4.
What time is it in Buenos Aires at the start of the working day in St Lucia?
The working day in St Lucia starts at 9:00 AM; in Buenos Aires it is 10:00 AM at that moment.
If it is 6:00 PM in St Lucia, what time is it in Buenos Aires?
At 6:00 PM in St Lucia, clocks in Buenos Aires show 7:00 PM.
Is there a time when both St Lucia and Buenos Aires are at work?
Yes: from 9:00 AM to 5:00 PM in St Lucia (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 St Lucia?
The new day starts in Buenos Aires earlier: at 11:00 PM in St Lucia it is already midnight there. Until 1:00 AM in Buenos Aires, St Lucia is still on the previous day.
Does the time gap between St Lucia and Buenos Aires change during the year?
No, the clocks change neither in St Lucia nor in Buenos Aires, so the gap is 1 hour all year round.
