The flight from New York (JFK) to Sepang (KUL) takes about 16h 44m nonstop on a widebody airliner, covering 9,426 miles (15,169 km).
Sepang is 12 hours ahead of New York. You cross 12 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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