Hyderabad is 11 hours 30 minutes ahead of Chicago during CST, and 10 hours 30 minutes ahead during CDT. Chicago uses Central Time (CST/CDT) while Hyderabad uses India Standard Time (IST, UTC+5:30). When it's 9:00 AM in Chicago, it's 8:30 PM in Hyderabad.
India does not observe daylight saving time while Chicago does, so the difference varies between 10.5-11.5 hours throughout the year.
Best calling time: 7:30 AM - 11:30 AM Chicago time. This corresponds to 7:00 PM - 11:00 PM in Hyderabad, or early morning calls from Chicago reach evening hours in India.
Hyderabad is a major IT hub, often called "Cyberabad," with many US companies having offices there. Chicago-based businesses frequently coordinate with Hyderabad teams, especially in technology and financial services sectors.