Charlestown to Buenos Aires: time difference
Buenos Aires is 1 h ahead of Charlestown. 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.
Charlestown 01:40 1:40 AM Buenos Aires 02:40 2:40 AM You –:–
01:40 1:40 AM
Atlantic Standard Time · UTC-4
☀️ 06:03 · 🌙 17:53
02:40 2:40 AM
Argentina Standard Time · UTC-3
☀️ 06:19 · 🌙 19:04
·
+1 h
Buenos Aires is 1 h ahead of Charlestown.
When you, Charlestown 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
🇰🇳 Charlestown
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 | 🇰🇳 Charlestown | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 01:40 | 02:40 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Atlantic Standard Time | Argentina Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Charlestown | — | +1 h |
| IANA zone | America/St Kitts | America/Argentina/Buenos Aires |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:03 | 06:19 |
| Sunset | 17:53 | 19:04 |
| Daylight | 11 h 51 min | 12 h 45 min |
| People on this clock | 1,500 | 2,891,082 |
Compare Charlestown with another city
More comparisons with Charlestown: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Charlestown and Buenos Aires: common questions
What is the time difference between Charlestown and Buenos Aires?
Buenos Aires is 1 hour ahead: it uses UTC−3, while Charlestown is on UTC−4.
What time is it in Buenos Aires at the start of the working day in Charlestown?
The working day in Charlestown starts at 9:00 AM; in Buenos Aires it is 10:00 AM at that moment.
If it is 6:00 PM in Charlestown, what time is it in Buenos Aires?
At 6:00 PM in Charlestown, clocks in Buenos Aires show 7:00 PM.
When do working hours in Charlestown and in Buenos Aires overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 5:00 PM in Charlestown, which is 10:00 AM to 6:00 PM in Buenos Aires.
When is it already the next day in Buenos Aires?
From 11:00 PM in Charlestown it is already the next day in Buenos Aires. The other way round, until 1:00 AM in Buenos Aires it is still the previous day in Charlestown.
Is the time difference between Charlestown and Buenos Aires the same all year?
Yes. Neither Charlestown nor Buenos Aires switches to summer time, so the gap is always 1 hour.
