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-tp25218462p25218462.html Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.