Halo 4 xbox live transmission

On this site
Halo 4 Site
there is evidence of a crashed Infinity, I thought I would be smart and search the source
And I found the audio for the site
Even though we could already hear it. You are able to rewind this audio, meaning everything in this can be transcribed.
But what interested me the most was how “05/31/02” appeared before the audio file in the source, I kinda have no clue to what it could mean.

good find!