Emacs is a very good editor (Well, almost religion for some people :-) ), with so much configuration possibilities one could configure it for years, and that’s good !

I want emacs to display the current date and time in it’s status bar, place this in your $HOME/.emacs and start emacs..

(setq display-time-day-and-date t
   display-time-24hr-format t)
(display-time)

And watch the magic ! It’ll now display Date, Time, system load and mail status in the status bar. Really useful, if you ask me.