Thoughts about a timeline...
Mood:  hungry
Topic: Intel on Riddick's 'Verse
I was looking at something the other day... Oh, yeah, the eyeshine info ;)

Anyhow I realized that Toombs gives us a date!

it's 6004.05

not much, I know. How do we interpert it? This will require more thought.

But here's what we do know or can infer: At that time Riddick was at Ursa Luna/Slam City. This was before Johns caught him and put him on the HG. According to Johns' chase log, they left Butcher Bay and Riddick was on the run 63 days before Johns catches him again.

We know that the Slam City webcomic had to happen sometime during the chase log. Johns was stabbed in the back at Butcher Bay, and when he shows up at Slam City he's got a red shotgun shell. From Pitch Black we know that its the red shells that contain John's stash of morphine. Johns himself tells Fry that he started using morphine after Riddick stabbed him in the back (Extened DVD footage shows him making her touch the scar, which is in the exact same place where Riddick stabs Johns in the scene in Butcher Bay before Vallance is killed).

So toombs date is sometime between day 47 and day 55 of Johns log. I'm inclined to place it at day 52...