เวลาที่แน่นอน:
The exact time in Chicago reflects the current local time in America's transportation and commodities trading heartland. Chicago operates on Central Time (CT): Central Standard Time (CST, UTC-6) in winter and Central Daylight Time (CDT, UTC-5) in summer. Illinois observes DST on the US national schedule — in 2026, spring forward on March 8 and fall back on November 1.
The Chicago Mercantile Exchange (CME Group) is the world's leading and most diverse derivatives marketplace, trading futures and options on interest rates, equities, foreign exchange, energy, agricultural commodities, and metals. CME trading hours for electronic products (CME Globex) run nearly 24 hours on weekdays, with a brief maintenance pause. The open-outcry pits at the Chicago Board of Trade (CBOT) and Chicago Mercantile Exchange operate from 8:30 AM to 1:00 PM CT for agricultural futures, while financial futures trade electronically. Chicago's Central Time position means CME markets open at 8:30 AM CT (9:30 AM ET) — 1 hour behind New York, giving Chicago traders an extra hour before the East Coast opens.
Chicago's O'Hare International Airport (ORD) is one of the world's busiest airports, and as the major hub for both United and American Airlines, Chicago's time zone affects flight schedules nationwide. Central Time serves as the "bridge" between the East and West Coasts — a 9:00 AM meeting in Chicago is 10:00 AM in New York and 7:00 AM in Los Angeles. The US Census Bureau estimates that roughly one-third of the US population lives in the Central Time Zone, including major cities like Dallas, Houston, Minneapolis, and St. Louis.
Chicago is 1 hour behind New York, 6 hours behind London (GMT/BST), 7 hours behind Central Europe (CET/CEST), 14 hours behind Beijing/Singapore, 15 hours behind Tokyo, and 16 hours behind Sydney (AEDT). Best international calling times: for Europe, 7:00-9:00 AM CT (1:00-3:00 PM GMT) and 1:00-3:00 PM CT (7:00-9:00 PM CET); for Asia, 7:00-8:00 AM CT (9:00-10:00 PM in Beijing) and 5:00-6:00 PM CT (next-day 7:00-8:00 AM in Tokyo).