Sorry to trouble you. I have spent hours looking on the web for the information.
Basically I want to get the 'st,nd,th etc' part of the day of the month in my dates.
I have:
 
<dtml-var EndingDate fmt="day">
 
Which obviously comes out as 11 for today. How do I make it come out as 11th?
 
Much appreciated,
 
Ben