[Haskell-cafe] ISO 8601 Date time format without old-locale?

I want to do ISO8601 formatting of a date with a numeric zone offset and I can't seem to find a way of doing it without requiring the old-locale package[1]. What is the current method of obtaining and formatting time representation if old-locale is old? Greetings, Bram [1] A sketch of the code using old-locale: -- 2014-11-18T06:37:04+00:00 iso8601DateTimeFormat :: String iso8601DateTimeFormat = "%FT%T%z" main = do now <- getCurrentTime putStrLn $ formatTime defaultTimeLocale iso8601DateTimeFormat now Which requires "defaultTimeLocale" from the old-locale package.