Buenos Aires to Reunion: time difference
Reunion is 7 h ahead of Buenos Aires. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Buenos Aires 04:21 4:21 AM Reunion 11:21 11:21 AM You –:–
04:21 4:21 AM
Argentina Standard Time · UTC-3
☀️ 06:19 · 🌙 19:04
11:21 11:21 AM
Réunion Time · UTC+4
☀️ 05:52 · 🌙 18:20
·
+7 h
Reunion is 7 h ahead of Buenos Aires.
When you, Buenos Aires and Reunion 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
🇷🇪 Reunion
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 5 5 AM 6 6 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇦🇷 Buenos Aires | 🇷🇪 Reunion |
|---|---|---|
| Local time | 04:21 | 11:21 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Argentina Standard Time | Réunion Time |
| UTC offset | UTC-3 | UTC+4 |
| Offset from Buenos Aires | — | +7 h |
| IANA zone | America/Argentina/Buenos Aires | Indian/Reunion |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:19 | 05:52 |
| Sunset | 19:04 | 18:20 |
| Daylight | 12 h 45 min | 12 h 27 min |
| People on this clock | 2,891,082 | 881,348 |
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 Reunion: common questions
How many hours ahead of Buenos Aires is Reunion?
The clocks in Reunion are 7 hours ahead of those in Buenos Aires (UTC+4 and UTC−3).
What time is it in Reunion at the start of the working day in Buenos Aires?
The working day in Buenos Aires starts at 9:00 AM; in Reunion it is 4:00 PM at that moment.
What time is it in Reunion at the end of the working day in Buenos Aires?
The working day in Buenos Aires ends at 6:00 PM; in Reunion it is 1:00 AM (the next day) at that moment.
When is a good time to call Reunion from Buenos Aires?
Between 9:00 AM and 11:00 AM in Buenos Aires – that is 4:00 PM to 6:00 PM in Reunion – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Reunion compared with Buenos Aires?
The new day starts in Reunion earlier: at 5:00 PM in Buenos Aires it is already midnight there. Until 7:00 AM in Reunion, Buenos Aires is still on the previous day.
Does the time gap between Buenos Aires and Reunion change during the year?
No, the clocks change neither in Buenos Aires nor in Reunion, so the gap is 7 hours all year round.
