San Juan to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of San Juan. Live clocks for both, the working hours they share, and how each one sits against your own time.
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
San Juan 05:32 5:32 AM Rio de Janeiro 06:32 6:32 AM You –:–
05:32 5:32 AM
Atlantic Standard Time · UTC-4
☀️ 05:55 · 🌙 17:48
06:32 6:32 AM
Brasilia Standard Time · UTC-3
☀️ 05:19 · 🌙 17:59
·
+1 h
Rio de Janeiro is 1 h ahead of San Juan.
When you, San Juan and Rio de Janeiro are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇹🇹 San Juan
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
🇧🇷 Rio de Janeiro
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 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇹🇹 San Juan | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 05:32 | 06:32 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Atlantic Standard Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from San Juan | — | +1 h |
| IANA zone | America/Port of Spain | America/Sao Paulo |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:55 | 05:19 |
| Sunset | 17:48 | 17:59 |
| Daylight | 11 h 52 min | 12 h 40 min |
| People on this clock | — | 6,211,223 |
Compare San Juan with another city
More comparisons with San Juan: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
San Juan and Rio de Janeiro: common questions
How many hours ahead of San Juan is Rio de Janeiro?
The clocks in Rio de Janeiro are 1 hour ahead of those in San Juan (UTC−3 and UTC−4).
If it is 9:00 AM in San Juan, what time is it in Rio de Janeiro?
At 9:00 AM in San Juan, clocks in Rio de Janeiro show 10:00 AM.
What time is it in Rio de Janeiro at the end of the working day in San Juan?
The working day in San Juan ends at 6:00 PM; in Rio de Janeiro it is 7:00 PM at that moment.
When is a good time to call Rio de Janeiro from San Juan?
Between 9:00 AM and 5:00 PM in San Juan – that is 10:00 AM to 6:00 PM in Rio de Janeiro – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Rio de Janeiro compared with San Juan?
The new day starts in Rio de Janeiro earlier: at 11:00 PM in San Juan it is already midnight there. Until 1:00 AM in Rio de Janeiro, San Juan is still on the previous day.
Does the time gap between San Juan and Rio de Janeiro change during the year?
No, the clocks change neither in San Juan nor in Rio de Janeiro, so the gap is 1 hour all year round.
