Rio de Janeiro to Piedras Negras: time difference
Piedras Negras is 2 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 01:59 1:59 AM Piedras Negras 23:59 11:59 PM You –:–
01:59 1:59 AM
Brasilia Standard Time · UTC-3
☀️ 05:18 · 🌙 17:59
23:59 11:59 PM
Central Daylight Time · UTC-5
☀️ 07:45 · 🌙 19:10
·
−2 h
Piedras Negras is 2 h behind Rio de Janeiro.
When you, Rio de Janeiro and Piedras Negras 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
🇲🇽 Piedras Negras
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 21 9 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇧🇷 Rio de Janeiro | 🇲🇽 Piedras Negras |
|---|---|---|
| Local time | 01:59 | 23:59 |
| Local date | Monday, October 19, 2026 | Sunday, October 18, 2026 |
| Time zone | Brasilia Standard Time | Central Daylight Time |
| UTC offset | UTC-3 | UTC-5 |
| Offset from Rio de Janeiro | — | −2 h |
| IANA zone | America/Sao Paulo | America/Matamoros |
| Daylight saving | Not observed | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 05:18 | 07:45 |
| Sunset | 17:59 | 19:10 |
| Daylight | 12 h 41 min | 11 h 25 min |
| People on this clock | 6,211,223 | 173,959 |
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 Piedras Negras: common questions
How many hours behind Rio de Janeiro is Piedras Negras?
The clocks in Piedras Negras are 2 hours behind those in Rio de Janeiro (UTC−5 and UTC−3).
What time is it in Piedras Negras when it is 9:00 AM in Rio de Janeiro?
When it is 9:00 AM in Rio de Janeiro, it is 7:00 AM in Piedras Negras.
What time is it in Piedras Negras when it is 6:00 PM in Rio de Janeiro?
When it is 6:00 PM in Rio de Janeiro, it is 4:00 PM in Piedras Negras.
Is there a time when both Rio de Janeiro and Piedras Negras are at work?
Yes: from 11:00 AM to 6:00 PM in Rio de Janeiro (9:00 AM to 4:00 PM in Piedras Negras), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Rio de Janeiro is it still yesterday in Piedras Negras?
Before 2:00 AM in Rio de Janeiro, the date in Piedras Negras has not changed yet. From 10:00 PM in Piedras Negras, it is already the next day in Rio de Janeiro.
Is the time difference between Rio de Janeiro and Piedras Negras the same all year?
No. Only Piedras Negras switches to summer time, so the gap changes twice a year. From November 1, 2026, Piedras Negras will be 3 hours behind Rio de Janeiro.
