The flight from Philadelphia (PHL) to Sepang (KUL) takes about 16h 54m nonstop on a widebody airliner, covering 9,486 miles (15,266 km).
Sepang is 12 hours ahead of Philadelphia. 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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