Guyancourt to Buenos Aires: time difference
Buenos Aires is 5 h behind Guyancourt. 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.
Guyancourt 02:47 2:47 AM Buenos Aires 21:47 9:47 PM You –:–
02:47 2:47 AM
Central European Summer Time · UTC+2
☀️ 08:21 · 🌙 18:53
21:47 9:47 PM
Argentina Standard Time · UTC-3
☀️ 06:06 · 🌙 19:12
·
−5 h
Buenos Aires is 5 h behind Guyancourt.
When you, Guyancourt 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
🇫🇷 Guyancourt
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 | 🇫🇷 Guyancourt | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 02:47 | 21:47 |
| Local date | Wednesday, October 21, 2026 | Tuesday, October 20, 2026 |
| Time zone | Central European Summer Time | Argentina Standard Time |
| UTC offset | UTC+2 | UTC-3 |
| Offset from Guyancourt | — | −5 h |
| IANA zone | Europe/Paris | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC+1, Oct 25, 02:00 | Not observed |
| Sunrise | 08:21 | 06:06 |
| Sunset | 18:53 | 19:12 |
| Daylight | 10 h 32 min | 13 h 6 min |
| People on this clock | 29,406 | 2,891,082 |
Compare Guyancourt with another city
More comparisons with Guyancourt: the time zones next to it and the far side of the clock.
Big time differences
Guyancourt and Buenos Aires: common questions
What is the time difference between Guyancourt and Buenos Aires?
Buenos Aires is 5 hours behind: it uses UTC−3, while Guyancourt is on UTC+2.
What time is it in Buenos Aires at the start of the working day in Guyancourt?
The working day in Guyancourt starts at 9:00 AM; in Buenos Aires it is 4:00 AM at that moment.
What time is it in Buenos Aires when it is 6:00 PM in Guyancourt?
When it is 6:00 PM in Guyancourt, it is 1:00 PM in Buenos Aires.
Is there a time when both Guyancourt and Buenos Aires are at work?
Yes: from 2:00 PM to 6:00 PM in Guyancourt (9:00 AM to 1:00 PM in Buenos Aires), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Buenos Aires compared with Guyancourt?
The new day starts in Buenos Aires later: until 5:00 AM in Guyancourt, it is still the previous day there. From 7:00 PM in Buenos Aires, Guyancourt is already on the next day.
Does the time gap between Guyancourt and Buenos Aires change during the year?
Yes – daylight saving time is used in Guyancourt but not in Buenos Aires. From October 25, 2026, Buenos Aires will be 4 hours behind Guyancourt.
