Union, SC to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Union, SC. 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.
Union, SC 09:12 9:12 AM Rio de Janeiro 10:12 10:12 AM You –:–
09:12 9:12 AM
Eastern Daylight Time · UTC-4
☀️ 07:39 · 🌙 18:45
10:12 10:12 AM
Brasilia Standard Time · UTC-3
☀️ 05:15 · 🌙 18:01
·
+1 h
Rio de Janeiro is 1 h ahead of Union, SC.
When you, Union, SC 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
🇺🇸 Union, SC
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
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Time zones side by side
| Detail | 🇺🇸 Union, SC | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 09:12 | 10:12 |
| Local date | Thursday, October 22, 2026 | Thursday, October 22, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Union, SC | — | +1 h |
| IANA zone | America/New York | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:39 | 05:15 |
| Sunset | 18:45 | 18:01 |
| Daylight | 11 h 6 min | 12 h 45 min |
| People on this clock | 8,000 | 6,211,223 |
Compare Union, SC with another city
More comparisons with Union, SC: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Union, SC and Rio de Janeiro: common questions
How far ahead of Union, SC, is Rio de Janeiro?
Rio de Janeiro is 1 hour ahead of Union: UTC−3 against UTC−4.
If it is 9:00 AM in Union, SC, what time is it in Rio de Janeiro?
At 9:00 AM in Union, 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 Union, SC?
The working day in Union ends at 6:00 PM; in Rio de Janeiro it is 7:00 PM at that moment.
Is there a time when both Union, SC, and Rio de Janeiro are at work?
Yes: from 9:00 AM to 5:00 PM in Union (10:00 AM to 6:00 PM in Rio de Janeiro), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Rio de Janeiro compared with Union, SC?
The new day starts in Rio de Janeiro earlier: at 11:00 PM in Union it is already midnight there. Until 1:00 AM in Rio de Janeiro, Union is still on the previous day.
Is the time difference between Union, SC, and Rio de Janeiro the same all year?
No. Only Union switches to summer time, so the gap changes twice a year. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Union.
