Istanbul and Chicago Time Zone Comparison
Istanbul and Chicago are two major cities that sit in noticeably different time zones. Istanbul is Turkey's largest city and historic capital, uniquely straddling Europe and Asia across the Bosphorus strait. Chicago is the largest city in the U.
Because Istanbul and/or Chicago observe daylight saving time for part of the year, the gap between them isn't fixed — it ranges between 8 and 9 hours depending on the season.
With a gap this large, business hours barely overlap between Istanbul and Chicago — an early morning or a late evening on one side is usually needed to connect with the other.