Chicago to Les Ulis time converter
Les Ulis is 7 hours ahead of Chicago. When it is 9:00 AM in Chicago, it is 4:00 PM in Les Ulis.
3:32 PM in Chicago, Sunday, October 18, 2026
Chicago to Les Ulis conversion table
Every hour of today in Chicago and the matching time in Les Ulis. Light rows are typical working hours (9:00–18:00).
| Chicago | Les Ulis |
|---|---|
| 12:00 AM | 7:00 AM |
| 1:00 AM | 8:00 AM |
| 2:00 AM | 9:00 AM |
| 3:00 AM | 10:00 AM |
| 4:00 AM | 11:00 AM |
| 5:00 AM | 12:00 PM |
| 6:00 AM | 1:00 PM |
| 7:00 AM | 2:00 PM |
| 8:00 AM | 3:00 PM |
| 9:00 AM | 4:00 PM |
| 10:00 AM | 5:00 PM |
| 11:00 AM | 6:00 PM |
| 12:00 PM | 7:00 PM |
| 1:00 PM | 8:00 PM |
| 2:00 PM | 9:00 PM |
| 3:00 PM | 10:00 PM |
| 4:00 PM | 11:00 PM |
| 5:00 PM | 12:00 AM+1 day |
| 6:00 PM | 1:00 AM+1 day |
| 7:00 PM | 2:00 AM+1 day |
| 8:00 PM | 3:00 AM+1 day |
| 9:00 PM | 4:00 AM+1 day |
| 10:00 PM | 5:00 AM+1 day |
| 11:00 PM | 6:00 AM+1 day |
Best time to call or meet
Both sides are at work from 9:00 AM – 11:00 AM in Chicago (4:00 PM – 6:00 PM in Les Ulis).
Daylight saving time and the difference
The difference changes during the year because Chicago and Les Ulis switch clocks on different dates:
- Oct 18, 2026 – Oct 24, 2026: +7h
- Oct 24, 2026 – Nov 1, 2026: +6h
- Nov 1, 2026 – Mar 14, 2027: +7h
- Mar 14, 2027 – Mar 27, 2027: +6h
- Mar 27, 2027 – Oct 18, 2027: +7h
Distance
Chicago and Les Ulis are 6,652 km (4,133 miles) apart in a straight line.
More conversions
Questions and answers
What is the time difference between Chicago and Les Ulis?
Les Ulis is 7 hours ahead of Chicago.
What time is it in Les Ulis when it is 9 AM in Chicago?
When it is 9:00 AM in Chicago, it is 4:00 PM in Les Ulis.
When is the best time to call Les Ulis from Chicago?
Both sides are at work from 9:00 AM – 11:00 AM in Chicago (4:00 PM – 6:00 PM in Les Ulis).
Does the time difference between Chicago and Les Ulis change?
Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.