I know this is probably a stupid question, and I have tried to work it out...

How do I change the sytem default date format from US style (mm/dd/yy) to UK/Australian style (dd/mm/yy)? I am finding that in some software apps which take their information from the sytem they are printing the dates in the "wrong" format.

I'm running RH 7.1 and using Gnome. I've looked in the Gnome setup and config settings and haven't found anything that looks appropriate.