🇨🇿 Ostrava, Czech Republic
42
- Central European Summer Time
- UTC+2
- Dawn
☀️ 07:01 · 🌙 18:09 · 11 h 8 min
Ostrava to Buenos Aires: time difference
Buenos Aires is 5 h behind Ostrava. Live clocks for both, the working hours they share, and how each one sits against your own time.
−5 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Ostrava 07:02 7:02 AM Buenos Aires 02:02 2:02 AM You –:–
07:02 7:02 AM
Central European Summer Time · UTC+2
☀️ 07:01 · 🌙 18:09
02:02 2:02 AM
Argentina Standard Time · UTC-3
☀️ 06:19 · 🌙 19:04
·
−5 h
Buenos Aires is 5 h behind Ostrava.
When you, Ostrava 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
🇨🇿 Ostrava
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
19 7 PM 20 8 PM 21 9 PM 22 10 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇿 Ostrava | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 07:02 | 02:02 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Central European Summer Time | Argentina Standard Time |
| UTC offset | UTC+2 | UTC-3 |
| Offset from Ostrava | — | −5 h |
| IANA zone | Europe/Prague | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC+1, Oct 25, 02:00 | Not observed |
| Sunrise | 07:01 | 06:19 |
| Sunset | 18:09 | 19:04 |
| Daylight | 11 h 8 min | 12 h 45 min |
| People on this clock | 304,880 | 2,891,082 |
Compare Ostrava with another city
More comparisons with Ostrava: the time zones next to it and the far side of the clock.
Big time differences
Ostrava and Buenos Aires: common questions
How far behind Ostrava is Buenos Aires?
Buenos Aires is 5 hours behind Ostrava: UTC−3 against UTC+2.
What time is it in Buenos Aires when it is 9:00 AM in Ostrava?
When it is 9:00 AM in Ostrava, it is 4:00 AM in Buenos Aires.
If it is 6:00 PM in Ostrava, what time is it in Buenos Aires?
At 6:00 PM in Ostrava, clocks in Buenos Aires show 1:00 PM.
When is a good time to call Buenos Aires from Ostrava?
Between 2:00 PM and 6:00 PM in Ostrava – that is 9:00 AM to 1:00 PM in Buenos Aires – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Buenos Aires?
Until 5:00 AM in Ostrava it is still the previous day in Buenos Aires. The other way round, from 7:00 PM in Buenos Aires it is already the next day in Ostrava.
Does the time gap between Ostrava and Buenos Aires change during the year?
Yes – daylight saving time is used in Ostrava but not in Buenos Aires. From October 25, 2026, Buenos Aires will be 4 hours behind Ostrava.
