Time Difference Between Chicago and Istanbul
Istanbul is 9h ahead of Chicago in standard time, and 8h ahead while Chicago is on daylight saving time.
Chicago clocks move forward on the second Sunday of March and back on the first Sunday of November. Istanbul keeps the same clock all year. The figures above cover each part of the year. They do not come from the offset on the day the site was built. The live clocks use the current time.
Working Hours Overlap
For each hour of Chicago's working day (9:00-18:00), here is the corresponding local time in Istanbul. Rows highlighted green fall within standard working hours (9:00-18:00) in both cities. Each block is one part of the year, so the table does not change with the day this page was built.
9h ahead (standard time)
| Chicago | Istanbul | Both working hours? |
|---|---|---|
| 9 AM | 6 PM | No |
| 10 AM | 7 PM | No |
| 11 AM | 8 PM | No |
| 12 PM | 9 PM | No |
| 1 PM | 10 PM | No |
| 2 PM | 11 PM | No |
| 3 PM | 12 AM | No |
| 4 PM | 1 AM | No |
| 5 PM | 2 AM | No |
| 6 PM | 3 AM | No |
8h ahead (daylight saving time in Chicago, while Istanbul is on standard time)
| Chicago | Istanbul | Both working hours? |
|---|---|---|
| 9 AM | 5 PM | Yes |
| 10 AM | 6 PM | No |
| 11 AM | 7 PM | No |
| 12 PM | 8 PM | No |
| 1 PM | 9 PM | No |
| 2 PM | 10 PM | No |
| 3 PM | 11 PM | No |
| 4 PM | 12 AM | No |
| 5 PM | 1 AM | No |
| 6 PM | 2 AM | No |
Best Time to Meet
9h ahead (standard time)
Chicago and Istanbul don't share a 9 AM-6 PM working-hours window during standard time. The least disruptive compromise is around 6 AM in Chicago, which falls at 3 PM in Istanbul. Expect one side to take an early or late call.
8h ahead (daylight saving time in Chicago, while Istanbul is on standard time)
- 9 AM-10 AM in Chicago (5 PM-6 PM in Istanbul) works for both sides. It falls within 9 AM-6 PM in both time zones.
How the Difference Changes
Only Chicago changes its clocks, so the gap is not one number. The rules are above. The dates for the year you are reading this page load below.
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Chicago
Chicago uses the America/Chicago time zone. Standard time is UTC-6, and daylight saving time is UTC-5.
Istanbul
Istanbul uses the Europe/Istanbul time zone, at UTC+3 all year. This zone does not observe daylight saving time.