plot datetick with mmm, dd yyyy in lower right corner as in datetime axis

Hi,

I am creating an errorbar plot using datetick to to display time (hh:MM) in my datenum x-axis, and would like to display the date (eg mmm, dd yyyy) ONLY ONCE in the lower right corner, like it is automatically done when I create a plot with a datetime axis (which isn't possible with errobar). Does somebody know how to do this?