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

  Returns the current local date and time, {{Year, Month, Day},
  {Hour, Minute, Second}}, for example:

    > erlang:localtime().
    {{1996,11,6},{14,45,17}}

  The time zone and Daylight Saving Time correction depend on the
  underlying OS. The return value is based on the OS System Time.
