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Time difference between Chicago and Istanbul

Istanbul is 8 hours ahead of Chicago

Chicago, the United States is UTC−6 · Istanbul, Türkiye is UTC+3 — 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 Chicago goes forward on the second Sunday in March and back on the first Sunday in November and Istanbul does not change its clocks.

Chicago / Istanbul clocksDifferenceHow long
summer / standard8 hours aheadabout 34 weeks — most of the year
standard / standard9 hours aheadabout 18 weeks

Istanbul stays put all year while Chicago moves, so a meeting fixed in Istanbul's calendar shifts by an hour twice a year at Chicago's end.

When they can both be at their desks

Nine-to-five in Chicago and nine-to-five in Istanbul do not overlap at all. With 8 hours between them, one side is always outside working hours, and the practical question is which side takes the early start or the late finish rather than when to meet.

Chicago to Istanbul, hour by hour

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

On the usual gap of 8 hours.

Frequently asked questions

What is the time difference between Chicago and Istanbul?

Istanbul is 8 hours ahead of Chicago for most of the year. It is not the same all year — there is one other gap, because Chicago goes forward on the second Sunday in March and back on the first Sunday in November and Istanbul does not change its clocks.

Is Istanbul ahead of Chicago?

Yes — Istanbul is 8 hours ahead. Chicago is UTC−6 and Istanbul is UTC+3 on standard time.

What time is 9 AM in Chicago in Istanbul?

5:00 PM, on the usual gap.

When can Chicago and Istanbul meet?

Nine-to-five in Chicago and nine-to-five in Istanbul do not overlap at all. One side has to take the call outside working hours, and with 8 hours between them it is worth deciding in advance which side that is.

Other pairs

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