The flight from San Francisco (SFO) to Beijing (PEK) takes about 11h 38m nonstop on a widebody airliner, covering 5,899 miles (9,494 km).
Beijing is 15 hours ahead of San Francisco. 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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