The flight from Las Vegas (LAS) to Sepang (KUL) takes about 16h 5m nonstop on a widebody airliner, covering 8,854 miles (14,249 km).
Sepang is 15 hours ahead of Las Vegas. You cross 15 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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