The flight from Istanbul (IST) to Hong Kong (HKG) takes about 8h 25m nonstop on a widebody airliner, covering 4,975 miles (8,007 km).
Hong Kong is 5 hours ahead of Istanbul. You cross 5 time zones heading east. Eastbound trips like this one tend to be harder to adjust to, so plan for a day or two of jet lag.
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