this is an impossible question to answer for many reasons
turkeys live outside 24/7/365
and eat every day pretty much unless there is some severe weather going on
so any day can be a good day if you want to hunt them
and you don't need fields to hunt them, heck most folks I know hunt no where near a field, NOT saying you cannot hunt fields
windy days are harder to hunt them IMO< due to there more nervous and you cannot hear then both talking and or moving about as well,
But some wind can help, as it can cover up your sounds while you try and find them and or close in on them/set up and so on!
so, again wind isn;t always bad, very heavy winds, I personally don;t go out!
as for what time to hunt them
ME personally I prefer spring gobbler hunting in the first 2-3 hours of day light best
I like to actually try and roost birds the night before, and then set up near where they have roosted or the night
thus giving me IMO< the best chance to have them come to me in the morning, being already where I know one is!
turkeys typically roost and then come sun light or close to it, start talking to each other, then fly down and again, talk more to regroup!
so first light gets my vote on best time to hunt them and in most places I have hunted
next would be mid morning near known food sources, where they will come and gather to eat mid morning or mid day and at this point MAYBE a gobbler will have left the hen he had at day break!
NOW< spring and fall hunting is very different and I approach things differently
but gathering your talking spring time hunts here, so
the above is my preferred times to hunt spring turkeys
I also have to admit I am NOT a die hard turkey guy, by noon, I had my fill for the day and typically call it quits and go do other things LOL