(Statistically, that is true. Judges tend to make different choices earlier in the day than later in the day. You never want to go to court in the afternoon, they are generally less sympathetic.)
If you have any reading on this stat, I'd love to see it. It makes sense to me - judges, in my experience, want to work as little as possible and go home as early as possible. You're just getting in the way by having an afternoon hearing. In many cases the time of the hearing is totally out of your hands though so you do the best with what you get...