Adding Month and Day to %Year%

Hmm, there is no restriction, maybe in panel view, but in grid view or extended tag view you can enter date string in ISO 8601 format e.g. long 2007-11-02T12:00:00 or short 2007-11-02 or shorter 20071102 or rather short 2007.

Read this thread and try it out:
Add composer if title matches from text file?

DD.20071215.0736.CET