The flight from Zurich (ZRH) to San Francisco (SFO) takes about 11h 30m nonstop on a widebody airliner, covering 5,826 miles (9,376 km).
San Francisco is 9 hours behind Zurich. You cross 9 time zones heading west. Westbound trips like this one are usually a little easier to adjust to, so plan for a day or two of jet lag.
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