The flight from Detroit (DTW) to Sepang (KUL) takes about 17h 7m nonstop on a widebody airliner, covering 9,314 miles (14,990 km).
Sepang is 12 hours ahead of Detroit. 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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