The flight from San Diego (SAN) to Sepang (KUL) takes about 16h 10m nonstop on a widebody airliner, covering 8,906 miles (14,333 km).
Sepang is 15 hours ahead of San Diego. 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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