The Czech Republic to Buenos Aires: time difference
Buenos Aires is 5 h behind the Czech Republic. 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.
Czech Republic 03:45 3:45 AM Buenos Aires 22:45 10:45 PM You –:–
03:45 3:45 AM
Central European Summer Time · UTC+2
☀️ 07:16 · 🌙 18:24
22:45 10:45 PM
Argentina Standard Time · UTC-3
☀️ 06:20 · 🌙 19:03
·
−5 h
Buenos Aires is 5 h behind the Czech Republic.
When you, the Czech Republic 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
🇨🇿 Czech Republic
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 | 🇨🇿 Czech Republic | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 03:45 | 22:45 |
| Local date | Saturday, October 10, 2026 | Friday, October 9, 2026 |
| Time zone | Central European Summer Time | Argentina Standard Time |
| UTC offset | UTC+2 | UTC-3 |
| Offset from the Czech Republic | — | −5 h |
| IANA zone | Europe/Prague | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC+1, Oct 25, 02:00 | Not observed |
| Sunrise | 07:16 | 06:20 |
| Sunset | 18:24 | 19:03 |
| Daylight | 11 h 7 min | 12 h 43 min |
| People on this clock | 10,900,555 | 2,891,082 |
Compare the Czech Republic with another city
More comparisons with the Czech Republic: the time zones next to it and the far side of the clock.
Big time differences
The Czech Republic and Buenos Aires: common questions
How many hours behind the Czech Republic is Buenos Aires?
The clocks in Buenos Aires are 5 hours behind those in the Czech Republic (UTC−3 and UTC+2).
If it is 9:00 AM in the Czech Republic, what time is it in Buenos Aires?
At 9:00 AM in the Czech Republic, clocks in Buenos Aires show 4:00 AM.
What time is it in Buenos Aires at the end of the working day in the Czech Republic?
The working day in the Czech Republic ends at 6:00 PM; in Buenos Aires it is 1:00 PM at that moment.
When do working hours in the Czech Republic and in Buenos Aires overlap?
Working hours (9:00 AM–6:00 PM) overlap from 2:00 PM to 6:00 PM in the Czech Republic, which is 9:00 AM to 1:00 PM in Buenos Aires.
When does the date change in Buenos Aires compared with the Czech Republic?
The new day starts in Buenos Aires later: until 5:00 AM in the Czech Republic, it is still the previous day there. From 7:00 PM in Buenos Aires, the Czech Republic is already on the next day.
Is the time difference between the Czech Republic and Buenos Aires the same all year?
No. Only the Czech Republic switches to summer time, so the gap changes twice a year. From October 25, 2026, Buenos Aires will be 4 hours behind the Czech Republic.
