Chicago to Isfahan Time Difference
Isfahan is 8 hours 30 min ahead of Chicago. When it is noon in Chicago, it is 20.5:00 in Isfahan.
Chicago (UTC-5) → Tehran (UTC+3:30)
🕐 Interactive Time Explorer
When it's 20:00 in Chicago, it's 4.5:00 in Isfahan
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
Chicago & Isfahan◐ Extended Hours (6 hours)
✈️ Travel Information
Distance
10,743 km
Est. Flight Time
~13.6h
Time Difference
+8.5h
Work Hours Overlap
0h
None
🔴 Office Closed
No overlap available
No overlap
⏰ Quick Conversion
06:00
Chicago
14.5:00
Isfahan
09:00
Chicago
17.5:00
Isfahan
12:00
Chicago
20.5:00
Isfahan
15:00
Chicago
23.5:00
Isfahan
18:00
Chicago
2.5:00
Isfahan (+1)
21:00
Chicago
5.5:00
Isfahan (+1)
00:00
Chicago
8.5:00
Isfahan
03:00
Chicago
11.5:00
Isfahan
Frequently Asked Questions
How many hours is Chicago behind Isfahan?
Isfahan is 8 hours 30 min ahead of Chicago. When it is 12:00 noon in Chicago, it is 20.5:00 in Isfahan. Chicago operates on America/Chicago (UTC-5), while Isfahan uses Asia/Tehran (UTC+3.5).
What is the best time to call Isfahan from Chicago?
Standard business hours (9 AM–5 PM) do not overlap between Chicago and Isfahan due to the 8 hours 30 min difference. Consider early morning or late evening calls, or use async communication.
Does the Chicago to Isfahan time difference change throughout the year?
The time difference can shift by up to one hour when either city observes Daylight Saving Time (DST). DST transition dates differ between countries — typically March/April in the Northern Hemisphere and October in the Southern Hemisphere. Always verify the live difference above when scheduling important meetings near DST changeover dates.
Flying between Chicago and Isfahan
The distance between Chicago and Isfahan is approximately 10,743 km. A direct flight typically takes around 13.6 hours. Your arrival clock will show local Isfahan time — use our Flight Time Calculator to predict exact arrival times.