Chicago to Cardiff
Cardiff is 6 hours ahead of Chicago.
Chicago
United States
Day
Difference
Cardiff
Wales, UK
Day
Best window to call: 09:00 - 11:00 Chicago time, both sides are inside 09:00-17:00.
Hour-by-hour conversion
Every hour of the day in Chicago with its equivalent in Cardiff. Green rows fall inside business hours for both.
About the Chicago-Cardiff gap
Chicago sits in the America/Chicago time zone (CDT), while Cardiff uses Europe/London (BST). That puts Cardiff 6 hours ahead of Chicago right now.
For scheduling, the practical overlap runs from 09:00 to 11:00 in Chicago. Booking inside that band means neither party is dialling in before breakfast or after dinner.
Related comparisons
- Cardiff to Chicago
- Chicago to London
- Chicago to New York
- Chicago to Los Angeles
- Chicago to São Paulo
- Chicago to Paris
See also current time in Chicago and current time in Cardiff.
Chicago and Cardiff, questions
- What is the time difference between Chicago and Cardiff?
- Cardiff is 6 hours ahead of Chicago. Chicago is currently on CDT and Cardiff on BST.
- What is the best time to call Cardiff from Chicago?
- Between 09:00 and 11:00 Chicago time, both cities are inside normal business hours of 09:00 to 17:00. Outside that window one side is either not yet at work or has already left.
- Is the difference between Chicago and Cardiff always the same?
- The gap is mostly stable, but if both cities observe daylight saving they may not switch on the same date, there are usually a few weeks each spring and autumn when the difference shifts by an hour.