Monterrey to Decatur, IL: time difference
Decatur, IL is 1 h ahead of Monterrey. 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.
Monterrey 17:40 5:40 PM Decatur, IL 18:40 6:40 PM You –:–
17:40 5:40 PM
Central Standard Time · UTC-6
☀️ 06:43 · 🌙 18:11
18:40 6:40 PM
Central Daylight Time · UTC-5
☀️ 07:11 · 🌙 18:12
·
+1 h
Decatur, IL is 1 h ahead of Monterrey.
When you, Monterrey and Decatur, 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
🇲🇽 Monterrey
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
🇺🇸 Decatur, IL
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
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇲🇽 Monterrey | 🇺🇸 Decatur, IL |
|---|---|---|
| Local time | 17:40 | 18:40 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Central Standard Time | Central Daylight Time |
| UTC offset | UTC-6 | UTC-5 |
| Offset from Monterrey | — | +1 h |
| IANA zone | America/Monterrey | America/Chicago |
| Daylight saving | Not observed | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 06:43 | 07:11 |
| Sunset | 18:11 | 18:12 |
| Daylight | 11 h 29 min | 11 h 1 min |
| People on this clock | 1,142,994 | 77,047 |
Compare Monterrey with another city
More comparisons with Monterrey: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Monterrey and Decatur, IL: common questions
How far ahead of Monterrey is Decatur, IL?
Decatur is 1 hour ahead of Monterrey: UTC−5 against UTC−6.
If it is 9:00 AM in Monterrey, what time is it in Decatur, IL?
At 9:00 AM in Monterrey, clocks in Decatur show 10:00 AM.
If it is 6:00 PM in Monterrey, what time is it in Decatur, IL?
At 6:00 PM in Monterrey, clocks in Decatur show 7:00 PM.
Is there a time when both Monterrey and Decatur, IL, are at work?
Yes: from 9:00 AM to 5:00 PM in Monterrey (10:00 AM to 6:00 PM in Decatur), the working days (9:00 AM–6:00 PM) overlap.
From what time in Monterrey is it tomorrow in Decatur, IL?
Once it is 11:00 PM in Monterrey, the date in Decatur has already changed. Until 1:00 AM in Decatur, it is still the previous day in Monterrey.
Is the time difference between Monterrey and Decatur, IL, the same all year?
No. Only Decatur switches to summer time, so the gap changes twice a year. From November 1, 2026, Decatur and Monterrey will have the same time.
