That is interesting. If you were hanging out in the park on an August day, you'd probably want to be in the shade. (I'm still hanging on to the theory the perp was hanging out in the park that day.)
And, if you're texting like Karina was, it's easier to see your phone in the shade than in the bright sunlight.
jmo
You're right, Inthedetails, that makes so much sense.