The flight from Singapore (SIN) to São Paulo (GRU) takes about 18h 1m nonstop on a widebody airliner, covering 9,939 miles (15,995 km).
São Paulo is 11 hours behind Singapore. You cross 11 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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