I know this is an old thread, but I thought I’d drop a suggestion for others who may have the same question, especially seeing as this long thread focused more on questioning the OP’s motives and methodology instead of giving him a simple answer.
OSX doesn’t appear to allow users to change the creation date of files. Unfortunately, this causes an issue for video editors who import old footage and want the files to reflect the date of filming, not the date the video was imported. For some people this is no big deal, as they are content to include the date in the name and then sort by name. But for those of us that like things to work the way they’re supposed to, this can be a big aggravation.
Long story short – you need a third party utility that lets you change file creation dates on a Mac. In my case, the problem was solved with the first product that popped up in Google search results: “A Better Finder Attributes”
Worked like a charm. You can download here:
https://www.publicspace.net/ABetterFinderAttributes/