Change the Format You Use for Long or Short Dates
To change the format of long or short dates for your company:
- In the Home window, on the Setup menu, select Settings.
 - Open Company, and select Date Format.
 - Select a Date Format for Short or Long dates.
 - Select a Date Separator for Short or Long dates
 - Click OK.
 
Note: You can also change the date format used on screen or in reports.