Time in Chicago, United States
Monday, September 21, 2026
When Chicago changes its clocks
Chicago is one of the places that still shifts its clocks twice a year
Chicago keeps Central Standard Time at UTC-06:00 for most of the year, and moves to Central Daylight Time at UTC-05:00 during its summer. The shift is 1 hour.
Next change
1 November 2026 — clocks move back by 1 hour, from UTC-05:00 to UTC-06:00.
Upcoming transition dates
- 8 March 2026 — forward to UTC-05:00
- 1 November 2026 — back to UTC-06:00
- 14 March 2027 — forward to UTC-05:00
- 7 November 2027 — back to UTC-06:00
- 12 March 2028 — forward to UTC-05:00
- 5 November 2028 — back to UTC-06:00
When the gap to Chicago changes
Dates in the next year where the difference shifts, by counterpart city
The difference between two cities is not a constant. It changes whenever either side moves its clocks — and because regions switch on different dates, there are short windows each year when the usual gap is wrong. These are the dates that matter for Chicago:
London (United Kingdom)
- From 25 October 2026: Chicago is 5 hours behind London
- From 1 November 2026: Chicago is 6 hours behind London
- From 14 March 2027: Chicago is 5 hours behind London
- From 28 March 2027: Chicago is 6 hours behind London
Frankfurt (Germany)
- From 25 October 2026: Chicago is 6 hours behind Frankfurt
- From 1 November 2026: Chicago is 7 hours behind Frankfurt
- From 14 March 2027: Chicago is 6 hours behind Frankfurt
- From 28 March 2027: Chicago is 7 hours behind Frankfurt
Tokyo (Japan)
- From 1 November 2026: Chicago is 15 hours behind Tokyo
- From 14 March 2027: Chicago is 14 hours behind Tokyo
Daylight and the sun over Chicago
Chicago sits at 41.88°, -87.63°
Longest day
15h 14m of daylight
Shortest day
9h 08m of daylight
Yearly swing
6h 06m between them
That is a swing of 6h 06m between midsummer and midwinter — a large seasonal difference. In practice it means an afternoon call with Chicago lands in broad daylight in June and well after dark in December, even though the clock time has not moved.
Clock time versus solar time
Chicago's clock is unusually well matched to the sun: local noon falls within 9 minutes of the moment the sun is actually overhead. Most cities sit further out, because time zones follow borders rather than longitude.
During summer time that gap widens to 51 minutes ahead of the sun, which is the whole point of the exercise — shifting daylight into the evening.
Quick Time Comparisons
See how Chicago time compares to other major cities right now
Time Zone Offset from Chicago
Best Times to Contact Chicago
Optimal calling and meeting hours
Business Hours
Typically 9:00 AM - 5:00 PM local time
Best for professional calls, meetings, and business inquiries
Personal Calls
Evenings 7:00 PM - 10:00 PM local time
Ideal for catching up with family and friends
Pro Tip: Use the meeting coordinator tool above to find overlapping working hours between your location and Chicago. This makes scheduling international meetings much easier!
Cultural Business Context
Chicago, United States • 05:24 local time
Consider Timing
Outside business hours
Quick Stats
Business Hours Timeline
Best Times to Contact
Times to Avoid
Business hours: 09:00 - 17:00 | Weekend: Sunday, Saturday | Lunch: 12:00 - 13:00
🌍 Cultural awareness enhances business relationships and prevents scheduling conflicts across global teams
Places related to Chicago
Cities that share a clock, a country, or an offset
On exactly the same clock as Chicago
These share the America/Chicago zone, so they keep the same time as Chicago and change their clocks on the same dates.
Elsewhere in United States
United States spans more than one time zone, so these cities are not on Chicago's clock — a common source of scheduling errors when people pick a country rather than a city.
Same offset (UTC-06:00), different part of the world
These sit in other countries but keep the same standard offset as Chicago (Central Standard Time). They will not necessarily change clocks on the same dates, so the match can be seasonal rather than permanent.
Meeting Time Coordinator
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Common Questions About Chicago Time
Frequently asked questions
What time zone is Chicago in?
Chicago operates in the America/Chicago time zone, known as Central Standard Time, currently UTC-06:00 (UTC-05:00 during summer time). This clock applies that offset directly from the IANA time zone database.
Does Chicago observe daylight saving time?
Yes. Chicago shifts its clocks by 1 hour, between UTC-06:00 and UTC-05:00. The next change is on 1 November 2026.
What's the time difference between Chicago and my location?
The time comparison tool above shows the current time difference. You can also use our meeting coordinator to find the best times for calls across different time zones.
How accurate is this Chicago clock?
Our clock synchronizes with your device's time and applies the official America/Chicago time zone offset. It updates every second and automatically handles daylight saving time, ensuring accuracy within a second.
Can I use this for scheduling meetings in Chicago?
Yes! This tool is perfect for scheduling. Use the meeting coordinator above to compare multiple time zones and find optimal meeting times that work for everyone in Chicago and other locations.
Time Zone Facts About Chicago
Interesting information about Chicago's time
IANA identifier
America/Chicago
Standard time name
Central Standard Time
Standard offset
UTC-06:00
Daylight saving
Observed — clocks shift 1 hour to UTC-05:00
Region
North America
Population
2,693,976