Clockjumper

Timezone conversion

GMT to Chicago Time — Convert Greenwich Mean Time to Chicago

Chicago is currently 5 hours behind GMT. The gap shifts across the year: around January Chicago is 6 hours behind GMT, and around July it is 5 hours behind GMT, because one or both zones observe daylight saving.

Chicago is currently 5 hours behind GMT.

GMTUTC (UTC+0)
2:32 PM
Thursday, Sep 10
ChicagoCDT (UTC-5)
9:32 AM
Thursday, Sep 10

Abbreviation disambiguation

GMT is equivalent to UTC for everyday use. In the UK it also refers to the winter (non-daylight-saving) time; in summer the UK moves to BST (UTC+1).

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Full GMT to Chicago conversion table

GMTChicago
12:00 AM7:00 PM(previous day)
1:00 AM8:00 PM(previous day)
2:00 AM9:00 PM(previous day)
3:00 AM10:00 PM(previous day)
4:00 AM11:00 PM(previous day)
5:00 AM12:00 AM
6:00 AM1:00 AM
7:00 AM2:00 AM
8:00 AM3:00 AM
9:00 AM4:00 AM
10:00 AM5:00 AM
11:00 AM6:00 AM
12:00 PM7:00 AM
1:00 PM8:00 AM
2:00 PM9:00 AM
3:00 PM10:00 AM
4:00 PM11:00 AM
5:00 PM12:00 PM
6:00 PM1:00 PM
7:00 PM2:00 PM
8:00 PM3:00 PM
9:00 PM4:00 PM
10:00 PM5:00 PM
11:00 PM6:00 PM

Daylight saving and how the gap changes

Around January Chicago is 6 hours behind GMT. Around July it is 5 hours behind GMT. That swing comes from one or both zones observing daylight saving on different schedules — the converter above always reflects the correct offset for the date you pick.

Frequently asked questions

Is Chicago ahead of or behind GMT right now?
Chicago is currently 5 hours behind GMT.
What is the current GMT to Chicago time difference?
Right now the gap is 5 hours — Chicago is 5 hours behind GMT.
Does the GMT → Chicago offset change during the year?
Yes. Around January Chicago is 6 hours behind GMT; around July it is 5 hours behind GMT. The converter above always reflects the correct offset for the date you pick.
Does GMT observe daylight saving time?
No — Greenwich Mean Time stays at a fixed UTC offset year-round.
Does Chicago observe daylight saving time?
Yes — Chicago observes DST, so its UTC offset shifts by 1 hour between winter and summer.
What time is 3 AM GMT in Chicago?
3:00 AM GMT is 10:00 PM (previous day) Chicago.
What time is 8 AM GMT in Chicago?
8:00 AM GMT is 3:00 AM Chicago.
What time is 9 AM GMT in Chicago?
9:00 AM GMT is 4:00 AM Chicago.
What time is 10 AM GMT in Chicago?
10:00 AM GMT is 5:00 AM Chicago.
What time is 11 AM GMT in Chicago?
11:00 AM GMT is 6:00 AM Chicago.
What time is 12 PM (noon) GMT in Chicago?
12:00 PM GMT is 7:00 AM Chicago.
What time is 2 PM GMT in Chicago?
2:00 PM GMT is 9:00 AM Chicago.
What time is 3 PM GMT in Chicago?
3:00 PM GMT is 10:00 AM Chicago.
What time is 4 PM GMT in Chicago?
4:00 PM GMT is 11:00 AM Chicago.
What time is 5 PM GMT in Chicago?
5:00 PM GMT is 12:00 PM Chicago.
What time is 9 PM GMT in Chicago?
9:00 PM GMT is 4:00 PM Chicago.
What time is 10 PM GMT in Chicago?
10:00 PM GMT is 5:00 PM Chicago.
When is the best time to schedule a call between GMT and Chicago?
The working-hours overlap (09:00–17:00 in both zones) runs roughly 2:00 PM – 5:00 PM GMT (≈ 3 hours). The midpoint of that window — 3:30 PM GMT, 10:30 AM Chicago — is the safest single slot to propose for a live call.
What time zone does GMT refer to?
GMT refers to Greenwich Mean Time (IANA: UTC).
What time zone does Chicago refer to?
Chicago uses the America/Chicago time zone.
Is GMT on this page the same as other zones that share the letters "GMT"?
GMT is equivalent to UTC for everyday use. In the UK it also refers to the winter (non-daylight-saving) time; in summer the UK moves to BST (UTC+1).