Deleting time from Due Date Format

I know I can go to the locale settings to change formats. Currenly I am using the date format Thu, Aug 27, 2015 11:32:02 AM

The problem is that we want our date format, most specifically Due Date, to simply be Thu, Aug 27, 2015

We do not want to see the time portion, so when we set a Due Date we simply have the date display withought the time portion…

Is there a file I can edit somewhere, to strip out the time portion of the date?