Rio de Janeiro to Atenas: time difference
Atenas is 3 h behind Rio de Janeiro. 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.
Rio de Janeiro 03:24 3:24 AM Atenas 00:24 12:24 AM You –:–
03:24 3:24 AM
Brasilia Standard Time · UTC-3
☀️ 05:17 · 🌙 18:00
00:24 12:24 AM
Central Standard Time · UTC-6
☀️ 05:27 · 🌙 17:19
·
−3 h
Atenas is 3 h behind Rio de Janeiro.
When you, Rio de Janeiro and Atenas are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇧🇷 Rio de Janeiro
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
🇨🇷 Atenas
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 20 8 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇧🇷 Rio de Janeiro | 🇨🇷 Atenas |
|---|---|---|
| Local time | 03:24 | 00:24 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Brasilia Standard Time | Central Standard Time |
| UTC offset | UTC-3 | UTC-6 |
| Offset from Rio de Janeiro | — | −3 h |
| IANA zone | America/Sao Paulo | America/Costa Rica |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:17 | 05:27 |
| Sunset | 18:00 | 17:19 |
| Daylight | 12 h 43 min | 11 h 52 min |
| People on this clock | 6,211,223 | 7,000 |
Compare Rio de Janeiro with another city
More comparisons with Rio de Janeiro: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Rio de Janeiro and Atenas: common questions
How far behind Rio de Janeiro is Atenas?
Atenas is 3 hours behind Rio de Janeiro: UTC−6 against UTC−3.
What time is it in Atenas when it is 9:00 AM in Rio de Janeiro?
When it is 9:00 AM in Rio de Janeiro, it is 6:00 AM in Atenas.
If it is 6:00 PM in Rio de Janeiro, what time is it in Atenas?
At 6:00 PM in Rio de Janeiro, clocks in Atenas show 3:00 PM.
When do working hours in Rio de Janeiro and in Atenas overlap?
Working hours (9:00 AM–6:00 PM) overlap from 12:00 PM to 6:00 PM in Rio de Janeiro, which is 9:00 AM to 3:00 PM in Atenas.
Until what time in Rio de Janeiro is it still yesterday in Atenas?
Before 3:00 AM in Rio de Janeiro, the date in Atenas has not changed yet. From 9:00 PM in Atenas, it is already the next day in Rio de Janeiro.
Is the time difference between Rio de Janeiro and Atenas the same all year?
Yes. Neither Rio de Janeiro nor Atenas switches to summer time, so the gap is always 3 hours.
