Thanks for replying MARZIO
I've tried using your formula, but the cells still wont format 'orange' as I want them to.
With the conditional formatting, the should end up looking like;
21/09/2015 (Orange)
18/01/2016 (Red)
26/04/2010 (Green)
11/07/2011 (Green)
07/04/2014 (Green)
23/05/2011 (Green)
27/07/2015 (Orange)
03/06/2013 (Green)
27/07/2015 (Orange)
25/01/2016 (Red)
Even with your formula, the 'orange' dates aren't formatting to orange (whereas the others are turning green / red)