Software to determine best hours to play?

[Buckstop]

I don't post, or lurk, here so much lately. But I'm a fulltime internet poker pro since 1999. I track my results with StatKing. It's only because of Statking that I know my earnings are significantly higher Monday thu Thursday compared to Friday thru Sunday.

I would like to nail down my most profitable hours... evenings? mornings? However, as far as I know, we can't do that with Pokertracker, or any other thing.

So, should I play at noon, or midnight? Anyone with an informed opinion on the subject, pleas enlighten me.