a quick question about change

How do I change the due date display format? e.g. Mon 9 May '16 instead of 5/9/16

I don’t want to affect my whole computer, just this.

I’m posting this again because last time I put it in the wrong place.

OmniFocus follows your Mac’s Date and Time System Preferences, but the app doesn’t include its own customizable date/time formatting options. We do have an open feature request for this though! If you drop us a line at omnifocus@omnigroup.com we’ll be glad to add your +1!