Naperville, IL to Buenos Aires: time difference
Buenos Aires is 2 h ahead of Naperville, IL. Live clocks for both, the working hours they share, and how each one sits against your own time.
+2 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Naperville, IL 15:21 3:21 PM Buenos Aires 17:21 5:21 PM You –:–
15:21 3:21 PM
Central Daylight Time · UTC-5
☀️ 07:11 · 🌙 18:05
17:21 5:21 PM
Argentina Standard Time · UTC-3
☀️ 06:06 · 🌙 19:12
·
+2 h
Buenos Aires is 2 h ahead of Naperville, IL.
When you, Naperville, IL and Buenos Aires are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 Naperville, IL
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
🇦🇷 Buenos Aires
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 1 1 AM
📍 Your time
- Asleep
- Early
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Time zones side by side
| Detail | 🇺🇸 Naperville, IL | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 15:21 | 17:21 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Central Daylight Time | Argentina Standard Time |
| UTC offset | UTC-5 | UTC-3 |
| Offset from Naperville, IL | — | +2 h |
| IANA zone | America/Chicago | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC-6, Nov 1, 01:00 | Not observed |
| Sunrise | 07:11 | 06:06 |
| Sunset | 18:05 | 19:12 |
| Daylight | 10 h 54 min | 13 h 6 min |
| People on this clock | 149,540 | 2,891,082 |
Compare Naperville, IL with another city
More comparisons with Naperville, IL: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Naperville, IL and Buenos Aires: common questions
How far ahead of Naperville, IL, is Buenos Aires?
Buenos Aires is 2 hours ahead of Naperville: UTC−3 against UTC−5.
What time is it in Buenos Aires when it is 9:00 AM in Naperville, IL?
When it is 9:00 AM in Naperville, it is 11:00 AM in Buenos Aires.
If it is 6:00 PM in Naperville, IL, what time is it in Buenos Aires?
At 6:00 PM in Naperville, clocks in Buenos Aires show 8:00 PM.
When is a good time to call Buenos Aires from Naperville, IL?
Between 9:00 AM and 4:00 PM in Naperville – that is 11:00 AM to 6:00 PM in Buenos Aires – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Buenos Aires compared with Naperville, IL?
The new day starts in Buenos Aires earlier: at 10:00 PM in Naperville it is already midnight there. Until 2:00 AM in Buenos Aires, Naperville is still on the previous day.
Is the time difference between Naperville, IL, and Buenos Aires the same all year?
No. Only Naperville switches to summer time, so the gap changes twice a year. From November 1, 2026, Buenos Aires will be 3 hours ahead of Naperville.
