The flight from Las Vegas (LAS) to Shanghai (Pudong) (PVG) takes about 12h 49m nonstop on a widebody airliner, covering 6,506 miles (10,470 km).
Shanghai (Pudong) 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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