File timestamp based dates in file date selection ranges

It is often desired to locate files (directory entries) that are either
older or newer than another file. I can do this today using the cumbersome
syntax below:
TOUCH already supports using a reference file (option switch /R). I suggest
a new date range option: /[Rref_file1,ref_file2] with the same modifier
syntax as an explicit [email protected]
There are many operations that would benefit, for example, catalog
updates and downloads.