Current Time in Chicago
United States — America/Chicago
About Time in Chicago
Chicago operates on Central Time (IANA: America/Chicago). During standard time, this is Central Standard Time (CST) at UTC-6. Daylight saving time shifts the city to Central Daylight Time (CDT) at UTC-5, running from the second Sunday in March to the first Sunday in November.
Chicago is 1 hour behind New York and 2 hours ahead of Los Angeles. It is 7 hours behind Paris during winter and 6 hours behind during European summer. The Central time zone is the most populated time zone in the United States, covering a wide swath from Texas to Minnesota.
Central Time heavily influences Chicago's role as a commodities trading hub. The Chicago Mercantile Exchange (CME) opens at 8:30 AM CT for regular trading, and its agricultural futures contracts set global prices for corn, soybeans, and wheat. The city's central time position also makes it a natural hub for national logistics and distribution networks.
Time Facts
Chicago was instrumental in establishing standardized time zones in the US — the General Time Convention of 1883, which created the four US time zones, was driven largely by railroad companies headquartered in Chicago.
The Chicago Mercantile Exchange's Globex electronic trading platform operates nearly 24 hours a day, but the 'pit open' at 8:30 AM CT remains the benchmark moment for price discovery.
Chicago's Central Time position means it shares the same time as Mexico City, making cross-border business between the two cities straightforward with no time conversion needed.
When it is noon in Chicago, it is 7:00 PM in Moscow and 3:00 AM the next day in Tokyo, making the Windy City a midpoint between European and Asian business hours.
Business Hours
Standard business hours in Chicago are 9:00 AM to 5:00 PM CT (15:00-23:00 UTC during CST, 14:00-22:00 UTC during CDT).