Chicago to Reykjavik
Reykjavik is 5 hours ahead of Chicago.
Chicago
United States
Difference
Reykjavik
Iceland
Best window to call: 09:00 - 12:00 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 Reykjavik. Green rows fall inside business hours for both.
About the Chicago-Reykjavik gap
Chicago sits in the America/Chicago time zone (CDT), while Reykjavik uses Atlantic/Reykjavik (UTC). That puts Reykjavik 5 hours ahead of Chicago right now.
These two cities do not handle daylight saving the same way, one adjusts its clocks seasonally and the other does not. The difference between them therefore moves by an hour twice a year, which is a common cause of missed meetings. The clocks above always show the live position rather than an assumed offset.
For scheduling, the practical overlap runs from 09:00 to 12:00 in Chicago. Booking inside that band means neither party is dialling in before breakfast or after dinner.
Related comparisons
- Reykjavik to Chicago
- Chicago to Cardiff
- 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 Reykjavik.
Chicago and Reykjavik, questions
- What is the time difference between Chicago and Reykjavik?
- Reykjavik is 5 hours ahead of Chicago. Chicago is currently on CDT and Reykjavik on UTC.
- What is the best time to call Reykjavik from Chicago?
- Between 09:00 and 12:00 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 Reykjavik always the same?
- No. One of these cities observes daylight saving time and the other does not, so the gap changes by an hour at each transition. Always check the live clocks rather than relying on a remembered offset.