Depends on the hunt for me. Time of year, stand location, weather, other hunting pressure, type of stand/blind, what I think the animals will be doing and where they will be at time of entry, and how deep in I go all have an effect on when I enter. Sometimes I'm there 2 hours before legal shooting time. Sometimes I don't enter the woods until after an early breakfast, bathroom break, hot beverage, good stretch, and goodbye kiss to the wife. I know it's a vague answer but if my experience is that deer in the area aren't moving until 1-3 hours after sunrise I likely won't show up until 30 minutes after sunrise and then slowly still hunt my way in. If my best shot is at daybreak and there's little to no pressure, no other hunters, and no odd weather I'm in location 15-30 minutes before legal shooting time and I enter very slowly. If I'm hunting a crowded area with lots of pressure and I want to go deep and reap the potential rewards of other hunters bumping deer my way as they come back in to bed, then I get there as early as I can drag my butt out of bed. I'll usually in these cases set an alarm on vibrate on my phone and put the phone on top of my head in my hat...no way to sleep through that and it doesn't make a ton of noise. I wake up 20 minutes before legal time and I'm ready to go.