Groton, CT to Sao Paulo: time difference
Sao Paulo is 1 h ahead of Groton, CT. 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.
Groton, CT 15:52 3:52 PM Sao Paulo 16:52 4:52 PM You –:–
15:52 3:52 PM
Eastern Daylight Time · UTC-4
☀️ 07:06 · 🌙 18:01
16:52 4:52 PM
Brasilia Standard Time · UTC-3
☀️ 05:30 · 🌙 18:14
·
+1 h
Sao Paulo is 1 h ahead of Groton, CT.
When you, Groton, CT and Sao Paulo are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 Groton, CT
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
🇧🇷 Sao Paulo
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 | 🇺🇸 Groton, CT | 🇧🇷 Sao Paulo |
|---|---|---|
| Local time | 15:52 | 16:52 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Groton, CT | — | +1 h |
| IANA zone | America/New York | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:06 | 05:30 |
| Sunset | 18:01 | 18:14 |
| Daylight | 10 h 55 min | 12 h 44 min |
| People on this clock | 40,115 | 11,451,999 |
Compare Groton, CT with another city
More comparisons with Groton, CT: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Groton, CT and Sao Paulo: common questions
How many hours ahead of Groton, CT, is Sao Paulo?
The clocks in Sao Paulo are 1 hour ahead of those in Groton (UTC−3 and UTC−4).
What time is it in Sao Paulo at the start of the working day in Groton, CT?
The working day in Groton starts at 9:00 AM; in Sao Paulo it is 10:00 AM at that moment.
What time is it in Sao Paulo at the end of the working day in Groton, CT?
The working day in Groton ends at 6:00 PM; in Sao Paulo it is 7:00 PM at that moment.
When do working hours in Groton, CT, and in Sao Paulo overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 5:00 PM in Groton, which is 10:00 AM to 6:00 PM in Sao Paulo.
When does the date change in Sao Paulo compared with Groton, CT?
The new day starts in Sao Paulo earlier: at 11:00 PM in Groton it is already midnight there. Until 1:00 AM in Sao Paulo, Groton is still on the previous day.
Is the time difference between Groton, CT, and Sao Paulo the same all year?
No. Only Groton switches to summer time, so the gap changes twice a year. From November 1, 2026, Sao Paulo will be 2 hours ahead of Groton.
