Buenos Aires to Castries: time difference
Castries 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 01:59 1:59 AM Castries 00:59 12:59 AM You –:–
01:59 1:59 AM
Argentina Standard Time · UTC-3
☀️ 06:19 · 🌙 19:04
00:59 12:59 AM
Atlantic Standard Time · UTC-4
☀️ 05:55 · 🌙 17:48
·
−1 h
Castries is 1 h behind Buenos Aires.
When you, Buenos Aires and Castries 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
🇱🇨 Castries
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 | 🇱🇨 Castries |
|---|---|---|
| Local time | 01:59 | 00:59 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 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/St Lucia |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:19 | 05:55 |
| Sunset | 19:04 | 17:48 |
| Daylight | 12 h 45 min | 11 h 54 min |
| People on this clock | 2,891,082 | 22,000 |
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 Castries: common questions
How many hours behind Buenos Aires is Castries?
The clocks in Castries 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 Castries?
At 9:00 AM in Buenos Aires, clocks in Castries show 8:00 AM.
What time is it in Castries when it is 6:00 PM in Buenos Aires?
When it is 6:00 PM in Buenos Aires, it is 5:00 PM in Castries.
When do working hours in Buenos Aires and in Castries overlap?
Working hours (9:00 AM–6:00 PM) overlap from 10:00 AM to 6:00 PM in Buenos Aires, which is 9:00 AM to 5:00 PM in Castries.
Until what time in Buenos Aires is it still yesterday in Castries?
Before 1:00 AM in Buenos Aires, the date in Castries has not changed yet. From 11:00 PM in Castries, it is already the next day in Buenos Aires.
Is the time difference between Buenos Aires and Castries the same all year?
Yes. Neither Buenos Aires nor Castries switches to summer time, so the gap is always 1 hour.
