Unix doesn't keep track of a creation date. The only information that's available is typically the last times the files was:

1. Accessed
1. Modified
1. Changed

You can get dates related to a particular file using the `stat` command.

### Example

    $ stat ffmpeg 
      File: `ffmpeg'
      Size: 19579304  	Blocks: 38248      IO Block: 4096   regular file
    Device: fd02h/64770d	Inode: 10356770    Links: 1
    Access: (0755/-rwxr-xr-x)  Uid: (  500/    saml)   Gid: (  501/    saml)
    Access: 2013-11-26 10:49:09.908261694 -0500
    Modify: 2013-11-02 17:05:13.357573854 -0400
    Change: 2013-11-02 17:05:13.357573854 -0400

### References
- http://unix.stackexchange.com/questions/20460/how-do-i-do-a-ls-and-then-sort-the-results-by-date-created
- http://unix.stackexchange.com/questions/50235/list-files-created-on-sundays
- http://unix.stackexchange.com/questions/24441/get-file-created-creation-time
- http://unix.stackexchange.com/questions/26205/why-does-unix-time-start-at-1970-01-01/87417#87417