The flight from Hong Kong (HKG) to Denver (DEN) takes about 12h 30m nonstop on a widebody airliner, covering 7,473 miles (12,027 km).
Denver is 14 hours behind Hong Kong. You cross 14 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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