The time difference is usually +7 hours. For a few weeks in spring and autumn it is +6 hours, because the two places change their clocks on different dates. When it is 12:00 PM (noon) in Chicago, it is 7:00 PM in Rome.
Changes during 2026
- Sunday, 8 March 2026: +6 hours
- Sunday, 29 March 2026: +7 hours
- Sunday, 25 October 2026: +6 hours
- Sunday, 1 November 2026: +7 hours
Conversion table
| Chicago | Rome |
|---|
Green: between 8 AM and 8 PM in both places – ideal for calls and meetings.