Sao Paulo to Naperville, IL: time difference
Naperville, IL is 2 h behind Sao Paulo. 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.
Sao Paulo 18:14 6:14 PM Naperville, IL 16:14 4:14 PM You –:–
18:14 6:14 PM
Brasilia Standard Time · UTC-3
☀️ 05:30 · 🌙 18:14
16:14 4:14 PM
Central Daylight Time · UTC-5
☀️ 07:11 · 🌙 18:05
·
−2 h
Naperville, IL is 2 h behind Sao Paulo.
When you, Sao Paulo and Naperville, IL are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇧🇷 Sao Paulo
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
🇺🇸 Naperville, IL
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 | 🇧🇷 Sao Paulo | 🇺🇸 Naperville, IL |
|---|---|---|
| Local time | 18:14 | 16:14 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Brasilia Standard Time | Central Daylight Time |
| UTC offset | UTC-3 | UTC-5 |
| Offset from Sao Paulo | — | −2 h |
| IANA zone | America/Sao Paulo | America/Chicago |
| Daylight saving | Not observed | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 05:30 | 07:11 |
| Sunset | 18:14 | 18:05 |
| Daylight | 12 h 44 min | 10 h 54 min |
| People on this clock | 11,451,999 | 149,540 |
Compare Sao Paulo with another city
More comparisons with Sao Paulo: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Sao Paulo and Naperville, IL: common questions
What is the time difference between Sao Paulo and Naperville, IL?
Naperville is 2 hours behind: it uses UTC−5, while Sao Paulo is on UTC−3.
What time is it in Naperville, IL, at the start of the working day in Sao Paulo?
The working day in Sao Paulo starts at 9:00 AM; in Naperville it is 7:00 AM at that moment.
What time is it in Naperville, IL, at the end of the working day in Sao Paulo?
The working day in Sao Paulo ends at 6:00 PM; in Naperville it is 4:00 PM at that moment.
When is a good time to call Naperville, IL, from Sao Paulo?
Between 11:00 AM and 6:00 PM in Sao Paulo – that is 9:00 AM to 4:00 PM in Naperville – both places are within working hours (9:00 AM–6:00 PM).
Until what time in Sao Paulo is it still yesterday in Naperville, IL?
Before 2:00 AM in Sao Paulo, the date in Naperville has not changed yet. From 10:00 PM in Naperville, it is already the next day in Sao Paulo.
Does the time difference between Sao Paulo and Naperville, IL, change?
Yes. The clocks change only in Naperville. From November 1, 2026, Naperville will be 3 hours behind Sao Paulo.
