Central Daylight Time
CDT means UTC−05:00 throughout the year. Central Time follows regional clock rules and uses UTC−06:00 on your selected date.
Use CT for local civil time →TIME ZONE CONVERTER
CDT to Chicago
Time Converter
Convert Central Daylight Time to Chicago, United States. Compare dates, seasonal differences and meeting hours.
CDT is 0h or 1h ahead of Chicago in 2026, depending on the date.
9 AM CDT = 8 AM Chicago
Selected date: November 3, 2026. Fixed abbreviations retain their stated UTC offsets.
THE QUICK REFERENCE
CSVCDT to Chicago conversion table
November 3, 2026 · Date changes are marked.
View the full 24-hour table
| CDT | Chicago |
|---|---|
| 12:00 AM | 11:00 PM -1 day |
| 1:00 AM | 12:00 AM |
| 2:00 AM | 1:00 AM |
| 3:00 AM | 2:00 AM |
| 4:00 AM | 3:00 AM |
| 5:00 AM | 4:00 AM |
| 6:00 AM | 5:00 AM |
| 7:00 AM | 6:00 AM |
| 8:00 AM | 7:00 AM |
| 9:00 AM | 8:00 AM |
| 10:00 AM | 9:00 AM |
| 11:00 AM | 10:00 AM |
| CDT | Chicago |
|---|---|
| 12:00 PM | 11:00 AM |
| 1:00 PM | 12:00 PM |
| 2:00 PM | 1:00 PM |
| 3:00 PM | 2:00 PM |
| 4:00 PM | 3:00 PM |
| 5:00 PM | 4:00 PM |
| 6:00 PM | 5:00 PM |
| 7:00 PM | 6:00 PM |
| 8:00 PM | 7:00 PM |
| 9:00 PM | 8:00 PM |
| 10:00 PM | 9:00 PM |
| 11:00 PM | 10:00 PM |
Starting with the Chicago working day
These examples start on 2026-11-03 in Chicago.
09:00 Chicago10:00 →CDT · 2026-11-03
17:00 Chicago18:00 →CDT · 2026-11-03
Which time-zone meaning are we using?
ONE CLOCK TIME. THE WHOLE YEAR.
Year CSV09:00 CDT to Chicago throughout 2026
Keeping 09:00 on the CDT clock produces 2 different destination clock/date answers in 2026. The ranges below use CDT calendar dates, including transition days.
| Dates in CDT · 2026 | Chicago answer | Source → destination offsets | Explore |
|---|---|---|---|
| Jan 1 – Mar 766 dates | 08:00Same date | UTC−05:00 → UTC−06:00 | |
| Mar 8 – Oct 31238 dates | 09:00Same date | UTC−05:00 → UTC−05:00 | |
| Nov 1 – Dec 3161 dates | 08:00Same date | UTC−05:00 → UTC−06:00 |
Every calendar date is included, not just workdays. Date ranges include both endpoints. Based on IANA 2026e; future rules may change.
DON’T LOSE A DAY
When does CDT time become a different date in Chicago?
Your complete source day: 2026-11-03. Each range shows which destination date to use.
CDT · 2026-11-0300:00–01:00UTC−05:00
Chicago · 2026-11-0223:00–24:00UTC−06:00 Previous day
CDT · 2026-11-0301:00–24:00UTC−05:00
Chicago · 2026-11-0300:00–23:00UTC−06:00 Same date
Range starts are included; ends are excluded. 24:00 means midnight at the end of that date. Repeated hours appear separately with their UTC offsets. The strip is proportional to elapsed time.
THE BIGGER PICTURE
2026A year of time differences.
How Chicago compares with CDT throughout 2026.
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
−1h
0h
−1h
Chicago changes its UTC offset in 2026. CDT is a fixed offset.
See exact change periods
| From (UTC, inclusive) | Until (UTC, exclusive) | Chicago vs CDT |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 8 Mar 2026, 08:00 UTC | 1h behind |
| 8 Mar 2026, 08:00 UTC | 1 Nov 2026, 07:00 UTC | 0h difference |
| 1 Nov 2026, 07:00 UTC | 1 Jan 2027, 00:00 UTC | 1h behind |
CLOCK CHANGES
What changes at the next clock adjustment?
Exact periods outside the most common difference in 2026
The most frequent difference has Chicago the same time relative to CDT. Exceptions:
| From (UTC, inclusive) | Until (UTC, exclusive) | Compared with CDT |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 8 Mar 2026, 08:00 UTC | 1h behind |
| 1 Nov 2026, 07:00 UTC | 1 Jan 2027, 00:00 UTC | 1h behind |
PLAN BEYOND A SINGLE DAY
Daily CSVCDT–Chicago working hours through 2026
Every date calculated with your working windows. 261 selected CDT workdays; public holidays are not applied.
Least shared time7h
Most common8h
Most shared time8h
Days without a 60-min slot0 / 261
A start time that survives the whole year.
Start a 60-minute meeting in CDT 10:00–16:00.
These starts fit both working windows on every selected CDT workday in 2026, using a 15-minute start grid. The end of each range is the last valid start.
CDT: 09:00–17:00, Mon, Tue, Wed, Thu, Fri. Chicago: 09:00–17:00, Mon, Tue, Wed, Thu, Fri.
Calculation details and repeated hours
Overnight shifts belong to their start weekday. Host workday means the source calendar date. Repeated local times use the first occurrence.
THE DETAILS THAT MATTER
CDT to Chicago: useful answers
Why is the CDT to Chicago difference sometimes 0 hours and sometimes 1 hour?
CDT is 0h or 1h ahead of Chicago in 2026, depending on the date. Chicago changes its UTC offset in 2026. CDT is a fixed offset.
Is CDT the same as local city time?
CDT is fixed at UTC−05:00. Chicago (CT) to Chicago uses regional rules instead. On 2026-11-03, 09:00 at the source becomes 09:00 at the destination (CST). Choose the local-city option above when that is the clock you mean.
Which cities match CDT throughout 2026?
Lima, Peru; Bogota, Colombia; Quito, Ecuador; Kingston, Jamaica keep the same UTC−05:00 offset as fixed CDT throughout 2026 under the published rules. Matching an offset does not mean every place uses the abbreviation CDT.
Does the CDT–Chicago time difference change in 2026?
The published rules produce 3 periods with 2 different offsets in 2026. See the annual chart for the exact boundaries of each period.
Does this conversion change the calendar date?
09:00 in CDT on 2026-11-03 is 08:00 in Chicago on 2026-11-03. This selected time stays on the same date in both places. Other times can cross midnight.
Can CDT and Chicago meet during working hours?
Your selected working windows share 7h on 2026-11-03. The planner above checks the whole meeting duration and shows suitable start times. Edit the windows to match your team.
Related time-zone meanings and conversions
Calculated with IANA 2026e. Working hours are your preferences; public holidays and calendar availability are not included. Our methodology