Zürich is 1 hour behind Istanbul.
Time difference
Istanbul is 1 to 2 hours ahead of Zürich, depending on daylight saving time. The gap changes by an hour when Zürich shifts its clocks for daylight saving time; Istanbul stays on the same offset year-round.
Working hours
A standard 9-to-6 workday in Zürich overlaps with Istanbul from 09:00 to 17:00 (10:00 to 18:00 in Istanbul). The easiest time to meet is around 13:00 in Zürich, which is 14:00 in Istanbul.
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