Buenos Aires to Ostrava: time difference
Ostrava is 5 h ahead of Buenos Aires. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇨🇿 Ostrava, Czech Republic
46
- Central European Summer Time
- UTC+2
- Golden hour
☀️ 07:01 · 🌙 18:09 · 11 h 8 min
+5 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Buenos Aires 03:07 3:07 AM Ostrava 08:07 8:07 AM You –:–
03:07 3:07 AM
Argentina Standard Time · UTC-3
☀️ 06:19 · 🌙 19:04
08:07 8:07 AM
Central European Summer Time · UTC+2
☀️ 07:01 · 🌙 18:09
·
+5 h
Ostrava is 5 h ahead of Buenos Aires.
When you, Buenos Aires and Ostrava 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
🇨🇿 Ostrava
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 1 1 AM 2 2 AM 3 3 AM 4 4 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇦🇷 Buenos Aires | 🇨🇿 Ostrava |
|---|---|---|
| Local time | 03:07 | 08:07 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Argentina Standard Time | Central European Summer Time |
| UTC offset | UTC-3 | UTC+2 |
| Offset from Buenos Aires | — | +5 h |
| IANA zone | America/Argentina/Buenos Aires | Europe/Prague |
| Daylight saving | Not observed | On summer time → UTC+1, Oct 25, 02:00 |
| Sunrise | 06:19 | 07:01 |
| Sunset | 19:04 | 18:09 |
| Daylight | 12 h 45 min | 11 h 8 min |
| People on this clock | 2,891,082 | 304,880 |
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 Ostrava: common questions
What is the time difference between Buenos Aires and Ostrava?
Ostrava is 5 hours ahead: it uses UTC+2, while Buenos Aires is on UTC−3.
What time is it in Ostrava when it is 9:00 AM in Buenos Aires?
When it is 9:00 AM in Buenos Aires, it is 2:00 PM in Ostrava.
What time is it in Ostrava when it is 6:00 PM in Buenos Aires?
When it is 6:00 PM in Buenos Aires, it is 11:00 PM in Ostrava.
When is a good time to call Ostrava from Buenos Aires?
Between 9:00 AM and 1:00 PM in Buenos Aires – that is 2:00 PM to 6:00 PM in Ostrava – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Ostrava compared with Buenos Aires?
The new day starts in Ostrava earlier: at 7:00 PM in Buenos Aires it is already midnight there. Until 5:00 AM in Ostrava, Buenos Aires is still on the previous day.
Does the time difference between Buenos Aires and Ostrava change?
Yes. The clocks change only in Ostrava. From October 25, 2026, Ostrava will be 4 hours ahead of Buenos Aires.
