Illinois time zone
Illinois is in the Central Time zone, which is UTC−6 in winter and UTC−5 during daylight saving time. Daylight saving time is observed.
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Frequently asked questions
What time zone is Illinois in?
Illinois is in the Central Time zone.
Does Illinois observe daylight saving time?
Yes. Clocks move forward one hour in spring and back one hour in fall.
What is the UTC offset of Illinois?
Illinois is UTC−6 in winter and UTC−5 during daylight saving time.