Current Time in Mattoon, Illinois, United States
8:37:26 PM CDT
Wednesday, May 20, 2026
Time Zone Details
- IANA Zone
- America/Chicago
- Time Zone
- CDT
- GMT Offset
- GMT-5
- Daylight Saving Time
- CST starts on Nov 1, 2026
- Country
- United States
- Est. Population
- ~18K people
Other Cities in This Time Zone
Frequently Asked Questions
- What time is it in Mattoon right now?
- Check the live clock above for the current time in Mattoon (CDT (GMT-5)). Use the interactive converter on this page to compare Mattoon with other cities.
- Does Mattoon observe daylight saving time?
- Yes, Mattoon is currently observing daylight saving time (CDT). Clocks will return to standard time (CST) on Nov 1, 2026.
- What is the GMT offset for Mattoon?
- Mattoon is at GMT-5 (CDT). The IANA timezone identifier is America/Chicago.