Kind of a simple answer but my favorite time is all day. With few exceptions, I stay all day, dark 'til dark.
Wehave shot deer at almost every hour of the huntung day.

Since I am usually setup in my treestand 30-45 min before legal shooting hour arrives, those early morning hours are special for me.
I get a chance to see the sky turn from black to light blue and also see the woods awaken. Vey special indeed.
Plus I'm full of excitement and anticipation as another hunting day nears.