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The current time in Chicago, United States is shown live on this page. Chicago is in the America/Chicago timezone, which has a UTC offset of UTC-05:00 (CDT). Chicago observes daylight saving time, switching between CST (UTC-05:00) and CDT (UTC0:06) annually. Chicago has a population of approximately 2.7M people. Chicago uses USD and the international calling code for United States is ++1. Other cities in the same timezone include Houston, Dallas, Minneapolis.
Now in US
Timezone
America/Chicago
UTC offset
UTC-05:00
Standard
CST
DST
CDT
Local time guide
Use this page when you need the live local time in Chicago for meetings, travel plans, event schedules, support hours, or international calls. London is currently 6 hours ahead of Chicago. New York is currently 1 hour ahead of Chicago.
At a glance
Quick compare
Timezone
America/Chicago
UTC Offset
UTC-05:00
Abbreviation
CDT
DST
Observing now
Region
Northern America
Country
United States
State / Area
Illinois
Calling Code
+1
Nearest timezone boundary
The nearest major city that uses a different timezone is Indianapolis, approximately 265 km away. Indianapolis uses the America/Indiana/Indianapolis timezone. When it is the current time in Chicago, the time in Indianapolis is different by 1 hours.
City profile
Chicago is located in Illinois, United States, in the North America continent. The primary language spoken here is English. The city has a population of approximately 2.7M, ranking it #88 in United States by size. For timezone purposes, Chicago uses America/Chicago (UTC-05:00). It observes daylight saving time, switching between CST and CDT depending on the time of year.
Travel and calls
Chicago observes daylight saving time. In 2026, clocks spring forward on March 8 (from CDT to CDT) and clocks fall back on November 1 (from CST to CST).
Currently observing Daylight Saving Time (DST).
Time comparison
Here is what time it is in other major cities when it is 12:00 AM (midnight) in Chicago. This is useful for planning calls and understanding the time difference at a fixed reference point.
Daylight hours
Based on Chicago's latitude (41.9°N), the estimated daylight duration for this month is approximately 15 hours, with sunrise around 4:29 AM and sunset around 7:31 PM. At this mid-latitude, daylight hours shift noticeably between seasons, with longer days in summer and shorter days in winter.
Public holidays
Independence Day
Saturday, July 4
Labor Day
Monday, September 7
Thanksgiving Day
Thursday, November 26
Christmas Day
Friday, December 25
Best time to call
For work calls, the standard business window in Chicago is roughly 9:00 AM to 5:00 PM CDT. If the other party is in a distant timezone, verify the exact date before sending a calendar invite — daylight saving transitions can shift the overlap by an hour without warning.
Business hours in Chicago (9:00 AM - 12:00 PM) overlap with London starting at 3:00 PM. The best window for calls between these two cities is 3 hours per day. Business hours overlap: 9:00 AM - 12:00 PM in Chicago time.
Local planning notes
Best call window
The optimal window for calls between Chicago and London is 9:00 AM - 12:00 PM in Chicago time (3 overlapping hours).
Daylight saving impact
Chicago switches between CST and CDT each year. Recurring meetings may shift by an hour during transitions. Upcoming transitions: spring forward on March 8, fall back on November 1.
Travel essentials
For travel and business planning, Chicago uses USD and the calling code for United States is +1. Languages spoken here include English. The city has a population of around 2.7M, making it a major regional hub for timezone planning in Northern America.
Timezone context
The nearest timezone boundary is 265 km away at Indianapolis (EST). This is a moderate distance, but the timezone difference can affect daily coordination.
Popular conversions
The most relevant time conversions for Chicago are with nearby Northern America cities and major global hubs in different timezones.
Timezone boundaries nearby
The closest cities that operate in a different timezone than Chicago. Useful for understanding where the timezone boundary falls and how local times differ just a short distance away.
Same timezone
Houston, Dallas, Minneapolis, New Orleans, and others share the America/Chicago timezone with Chicago. These cities have the same current offset and follow the same daylight saving schedule, so they are useful alternatives when comparing local time across the region.
Embed this clock
Embed a live Chicago clock on your website. The widget is fully responsive, lightweight, and free to use.
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