The flight from Sepang (KUL) to Atlanta (ATL) takes about 17h 39m nonstop on a widebody airliner, covering 9,891 miles (15,919 km).
Atlanta is 12 hours behind Sepang. You cross 12 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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