I am very interested in the many expiration date codes that are on packages.  I am able to read many of them.  I have the formula to read the nestle co, hershey co, and m&m mars co thanks to you but I cannot find many other companies that will explain their codes.
Some of the companies I am interested in are—-Dentyne, Wrigley, Reeses, Skittles, Starburst, & Dove
Also, how many different date codes are there besides the Julian date code and how are they decyphered?