How about: import Data.Time.Calendar import Data.Time.Calendar.WeekDate
main = do let (y, w, d) = toWeekDate $ addDays 150 (fromGregorian 2009 8 31) putStrLn $ show d 2009/8/31 zaxis <z_a...@163.com>: > > addDays 150 (fromGregorian 2009 8 31) will work. However, how can i get its > weekday from the result ? > > thanks! > > > zaxis wrote: >> >> today = fromGregorian 2009 8 31 >> >> then how to calculate the day passing 150 days ? >> >> today + 150 doesnot work ! >> > > -- > View this message in context: > http://www.nabble.com/Data.Time-is-so-weak--%21-tp25218462p25218554.html > Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com. > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > -- Colin Adams Preston, Lancashire, ENGLAND _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe