The Date Format option can be found under File menu, in the Options dialog, General Settings tab.
Date formats are based on system date formats. For example, if you enter a date as 2/3/03, this will be interpreted as either February 3rd, or March 2nd, depending on the system's regional setting for date formats.
To change the Date Format, open Date format dialog and pick the format you want. In this way, you can change the date format in all the views of the application by choosing from a list of available formats.