Time Difference: New York and Chicago

New York (Eastern Time, UTC-5) and Chicago (Central Time, UTC-6) are exactly 1 hour apart, and that gap never changes. Both cities observe US Daylight Saving Time on the same dates, so EST to CST is 1 hour, and EDT to CDT is also 1 hour. There are no transition windows, no seasonal surprises.

The 1-hour difference has real consequences for financial markets. The New York Stock Exchange (NYSE) opens at 9:30 AM Eastern — that is 8:30 AM Central Time in Chicago. The CME Group and Chicago Board Options Exchange (CBOE), both headquartered in Chicago, open and close their sessions using Eastern Time as the reference, which means Chicago-based traders are used to an 8:30 AM market open in their local time.

For most business and personal scheduling, a 1-hour difference is minor. A 9:00 AM meeting in New York is an 8:00 AM call in Chicago. Early-morning New York calls require Chicago participants to join an hour earlier — worth noting for any call scheduled before 10:00 AM Eastern.

The safest way to use this page is to treat the live clocks and the conversion table as two different tools. The live clocks show what is true right now. The table gives you a quick reference based on the page's stated offset, which is useful for planning but still needs the daylight saving note when the two places change clocks on different dates.

Always check the calendar date when the converted time lands near midnight. A late evening time in New York can become the next day in Chicago, and an early morning time can still be the previous day on the other side. That date shift is the part people miss most often when they copy only the clock time into an email or spreadsheet.

For recurring meetings, verify the same slot twice: once in January and once in July. If the answer changes, daylight saving time is involved. Put both local times in the calendar invite, include the timezone abbreviation, and update the invite before the next clock-change week. That is much safer than writing "9 AM your time" and assuming everyone's calendar will interpret it the same way.

If this is a one-off event, use the live clocks above before sending the final time. If you need a custom hour that is not shown in the table, open the related converter or meeting scheduler and enter the exact date and time. That keeps the result tied to the correct timezone rules instead of a memorized offset.

Abbreviations can be slippery, too. ET can mean EST or EDT depending on the season; London can mean GMT or BST; Sydney can mean AEST or AEDT. When accuracy matters, the city name and IANA timezone are safer than the abbreviation alone. This page uses the city timezone for the live clocks, then explains the seasonal abbreviation changes in the note so you can see why the displayed offset may differ from a simple winter table.