[ALUG] Is there anything 'ready made' to add suffixes to ordinal numbers (in dates in particular)?

I'd like to output dates like:- 1st September 2009 23rd August 1967 I.e. I want the 'st' and 'rd' suffixes for the day. It doesn't look like strftime() offers an option to do this. I can obviously do it myself with a switch/case or some if/then/else statements but I was wondering if there's anything ready-made that I've missed. -- Chris Green