Sorting by precise dates / formatting dates

EndNote is able to perform alphanumeric sorts (i.e., alphabetical or numerical order).  For example, I created six records using your yyyy/mm/dd format and happened to use the “Notes” field to store the info although any field including a customized field will do.  The records were then easily sorted in the EndNote library using the yyyy/mm/dd format (see image) which can be performed for either ascending or descending order. 

There are various ways you could converting the records’ dates to the yyyy/mm/dd format. One way would be to: 1) parse out the month, year, day info into three separate fields; 2) recode the months (within the month field) to a numeric code (e.g., “February” becomes “02”); then finally 3) aggregating and rearranging the three fields into the one (year/mm/dd).