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Time difference between Rome and Chicago

Chicago is 7 hours behind Rome

Rome, Italy is UTC+1 · Chicago, the United States is UTC−6 — on standard time

The gap is not the same all year

Every converter gives one number for this pair. That number is right for most of the year and wrong for part of it, because Rome goes forward on the last Sunday in March and back on the last Sunday in October and Chicago goes forward on the second Sunday in March and back on the first Sunday in November.

Rome / Chicago clocksDifferenceHow long
summer / summer, standard / standard7 hours behindabout 48 weeks — most of the year
standard / summer6 hours behindabout 4 weeks

Both change their clocks and both are in the northern hemisphere, but not on the same weekend — Rome goes forward on the last Sunday in March and Chicago on the second Sunday in March. For the days in between, the gap is neither party's expected figure, and a standing meeting silently moves by an hour. That mismatch is a common cause of a missed international call.

When they can both be at their desks

Nine-to-five in both cities overlaps for 1 hour — 4:00 PM to 5:00 PM in Rome, the same moment as 9:00 AM to 10:00 AM in Chicago.

Rome to Chicago, hour by hour

RomeChicago
12:00 AM5:00 PM (previous day)
1:00 AM6:00 PM (previous day)
2:00 AM7:00 PM (previous day)
3:00 AM8:00 PM (previous day)
4:00 AM9:00 PM (previous day)
5:00 AM10:00 PM (previous day)
6:00 AM11:00 PM (previous day)
7:00 AM12:00 AM
8:00 AM1:00 AM
9:00 AM2:00 AM
10:00 AM3:00 AM
11:00 AM4:00 AM
12:00 PM5:00 AM
1:00 PM6:00 AM
2:00 PM7:00 AM
3:00 PM8:00 AM
4:00 PM9:00 AM
5:00 PM10:00 AM
6:00 PM11:00 AM
7:00 PM12:00 PM
8:00 PM1:00 PM
9:00 PM2:00 PM
10:00 PM3:00 PM
11:00 PM4:00 PM

On the usual gap of 7 hours.

Frequently asked questions

What is the time difference between Rome and Chicago?

Chicago is 7 hours behind Rome for most of the year. It is not the same all year — there is one other gap, because Rome goes forward on the last Sunday in March and back on the last Sunday in October and Chicago goes forward on the second Sunday in March and back on the first Sunday in November.

Is Chicago ahead of Rome?

No — Chicago is 7 hours behind. Rome is UTC+1 and Chicago is UTC−6 on standard time.

What time is 9 AM in Rome in Chicago?

2:00 AM, on the usual gap.

When can Rome and Chicago meet?

Standard nine-to-five hours overlap for 1 hour: 4:00 PM–5:00 PM in Rome, which is 9:00 AM–10:00 AM in Chicago.

Other pairs

Every Rome pair · Every Chicago pair · All city pairs · Time zones by abbreviation