
  -spec erlang:universaltime() -> DateTime
                                when DateTime :: calendar:datetime().

  Returns the current date and time according to Universal Time
  Coordinated (UTC) in the form {{Year, Month, Day}, {Hour, Minute,
  Second}} if supported by the underlying OS. Otherwise 
  erlang:universaltime() is equivalent to erlang:localtime(). The
  return value is based on the OS System Time. Example:

    > erlang:universaltime().
    {{1996,11,6},{14,18,43}}
