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.
Halo-radio-radio
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!