Cotonou to Buenos Aires: time difference
Buenos Aires is 4 h behind Cotonou. Live clocks for both, the working hours they share, and how each one sits against your own time.
−4 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Cotonou 04:20 4:20 AM Buenos Aires 00:20 12:20 AM You –:–
04:20 4:20 AM
West Africa Standard Time · UTC+1
☀️ 06:38 · 🌙 18:38
00:20 12:20 AM
Argentina Standard Time · UTC-3
☀️ 06:20 · 🌙 19:03
·
−4 h
Buenos Aires is 4 h behind Cotonou.
When you, Cotonou 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
🇧🇯 Cotonou
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
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 19 7 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇧🇯 Cotonou | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 04:20 | 00:20 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | West Africa Standard Time | Argentina Standard Time |
| UTC offset | UTC+1 | UTC-3 |
| Offset from Cotonou | — | −4 h |
| IANA zone | Africa/Porto-Novo | America/Argentina/Buenos Aires |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:38 | 06:20 |
| Sunset | 18:38 | 19:03 |
| Daylight | 12 h 1 min | 12 h 43 min |
| People on this clock | 780,000 | 2,891,082 |
Compare Cotonou with another city
More comparisons with Cotonou: the time zones next to it and the far side of the clock.
Big time differences
Cotonou and Buenos Aires: common questions
How many hours behind Cotonou is Buenos Aires?
The clocks in Buenos Aires are 4 hours behind those in Cotonou (UTC−3 and UTC+1).
If it is 9:00 AM in Cotonou, what time is it in Buenos Aires?
At 9:00 AM in Cotonou, clocks in Buenos Aires show 5:00 AM.
What time is it in Buenos Aires at the end of the working day in Cotonou?
The working day in Cotonou ends at 6:00 PM; in Buenos Aires it is 2:00 PM at that moment.
Is there a time when both Cotonou and Buenos Aires are at work?
Yes: from 1:00 PM to 6:00 PM in Cotonou (9:00 AM to 2:00 PM in Buenos Aires), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Buenos Aires compared with Cotonou?
The new day starts in Buenos Aires later: until 4:00 AM in Cotonou, it is still the previous day there. From 8:00 PM in Buenos Aires, Cotonou is already on the next day.
Does the time gap between Cotonou and Buenos Aires change during the year?
No, the clocks change neither in Cotonou nor in Buenos Aires, so the gap is 4 hours all year round.
