I am very surprised that you do not have an image info tag of date of image--I mean the date of the file, the timestamp of the image--not the time it was generated, but the actual date of the file. Many people timestamp their photos/images to the time the photo was taken, which could be years off from the time the image was "generated" ("modified," I assume is meant by "generated").

For example, I have a file dated (timestamp) 8-31-1979 (which, by the way in Windows Explorer, non NTFS, appears as 2079, not 1979), but your "generated" tag displays as July 14, 2014, the date I think the file was created/modified, **regardless* of the actual timestamp (which I, of course, modified myself)