In the Date field of your references, enter dates as you would like them to appear in your formatted list or bibliography; EndNote does not reformat dates. The output style determines which date field prints in your bibliographic references.
Note: When you transfer references from an outside source into EndNote, only valid dates are parsed and transferred. Text such as "submitted" or "in print" is ignored. However, you can manually type this information into the reference.
Two Auto Date Stamp fields are available that you can add to the Library window.
The Added to Library and Last Updated date fields are inserted when you save a new reference. The Last Updated date is reset each time you save changes to a reference. The date format of the Auto Date Stamp fields matches your default operating system settings (for example, 4/16/2012).
To add the two Auto Date Stamp fields to the Library window, select Preferences > Display Fields. From the Field column, select the Added to Library and/or Last Updated fields. EndNote populates the Heading column with your selection.
You cannot edit, print, or export either of the Auto Date Stamp fields. You can, however, display and sort these fields from the Library window just as you can with any other EndNote field.
Note: For references entered with EndNote version X1 or earlier, the Added to Library field is left blank and the Last Updated field displays the date of conversion to EndNote.