Tehran to Chicago Time Difference
🇮🇷 Tehran is currently 8.5 hours behind of 🇺🇸 Chicago. This difference varies between 9.5h and 8.5h due to Daylight Saving Time.
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Difference
-8.5h
Business overlap
None
Distance
10,435 km
Approx. flight
12.3h
Hour-by-Hour: Tehran to Chicago
| 🇮🇷 Tehran | 🇺🇸 Chicago | Note |
|---|---|---|
| 12:00 AM | 3:30 PM(prev day) | Previous day |
| 1:00 AM | 4:30 PM(prev day) | Previous day |
| 2:00 AM | 5:30 PM(prev day) | Previous day |
| 3:00 AM | 6:30 PM(prev day) | Previous day |
| 4:00 AM | 7:30 PM(prev day) | Previous day |
| 5:00 AM | 8:30 PM(prev day) | Previous day |
| 6:00 AM | 9:30 PM(prev day) | Previous day |
| 7:00 AM | 10:30 PM(prev day) | Previous day |
| 8:00 AM | 11:30 PM(prev day) | Previous day |
| 9:00 AM | 12:30 AM | |
| 10:00 AM | 1:30 AM | |
| 11:00 AM | 2:30 AM | |
| 12:00 PM | 3:30 AM | |
| 1:00 PM | 4:30 AM | |
| 2:00 PM | 5:30 AM | |
| 3:00 PM | 6:30 AM | |
| 4:00 PM | 7:30 AM | |
| 5:00 PM | 8:30 AM | |
| 6:00 PM | 9:30 AM | |
| 7:00 PM | 10:30 AM | |
| 8:00 PM | 11:30 AM | |
| 9:00 PM | 12:30 PM | |
| 10:00 PM | 1:30 PM | |
| 11:00 PM | 2:30 PM |
Daylight Saving Time (DST)
Chicago observes Daylight Saving Time, while Tehran does not. This causes the time difference to shift between 9.5 hours behind and 8.5 hours behind depending on the season. Currently, Tehran is 8.5 hours behind relative to Chicago.
Min difference
9.5h
Max difference
8.5h
Best Meeting Times
There is no overlap between standard business hours (9 AM – 6 PM) in Tehran and Chicago. Consider scheduling early morning or late evening calls to bridge the gap.
Frequently Asked Questions
What is the time difference between Tehran and Chicago?
The time difference between Tehran and Chicago is currently 8.5 hours behind. Tehran uses GMT+3:30 (UTC+3:30), while Chicago uses CDT (UTC-5). This difference varies seasonally due to Daylight Saving Time, ranging from 9.5 hours behind to 8.5 hours behind.
When it's noon in Tehran, what time is it in Chicago?
When it's 12:00 PM (noon) in Tehran, it is 3:30 AM in Chicago. Use our calculator above to convert any other time.
Does the time difference between Tehran and Chicago change?
Yes, the time difference changes throughout the year. Because Chicago observes Daylight Saving Time, the offset shifts between 9.5 hours behind and 8.5 hours behind at different times of the year.
What are the best times to schedule a call between Tehran and Chicago?
There is no overlap between standard business hours (9 AM – 6 PM) in Tehran and Chicago. Consider scheduling early morning in one city or late evening in the other to find a mutually reasonable time.
Is Tehran ahead or behind Chicago?
Tehran is currently 8.5 hours ahead of Chicago.
What time zone is Tehran in?
Tehran is in the Asia/Tehran time zone, currently using GMT+3:30 (UTC+3:30). Tehran does not observe Daylight Saving Time.
What time is midnight in Tehran in Chicago?
When it is midnight (12:00 AM) in Tehran, it is 3:30 PM in Chicago.