Chicago to Herisau time converter
Herisau is 7 hours ahead of Chicago. When it is 9:00 AM in Chicago, it is 4:00 PM in Herisau.
10:53 AM in Chicago, Sunday, October 18, 2026
Chicago to Herisau conversion table
Every hour of today in Chicago and the matching time in Herisau. Light rows are typical working hours (9:00–18:00).
| Chicago | Herisau |
|---|---|
| 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 Herisau).
Daylight saving time and the difference
The difference changes during the year because Chicago and Herisau 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 Herisau are 7,175 km (4,458 miles) apart in a straight line.
More conversions
Questions and answers
What is the time difference between Chicago and Herisau?
Herisau is 7 hours ahead of Chicago.
What time is it in Herisau when it is 9 AM in Chicago?
When it is 9:00 AM in Chicago, it is 4:00 PM in Herisau.
When is the best time to call Herisau from Chicago?
Both sides are at work from 9:00 AM – 11:00 AM in Chicago (4:00 PM – 6:00 PM in Herisau).
Does the time difference between Chicago and Herisau change?
Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.