I usually do not see the mature bucks, in the areas that I hunt, start to move in daylight hours until Oct. 20th. Give or take a couple days. Once, I knew where one was bedded and was hunting him since Oct. 1st. He didn't show himself until 5 minutes before quitting time exactly on Oct. 20th. He was bedding in a small patch of cattails on the edge of a soybean field. I watched from across the field. I think that the bucks are eating and resting up for the rut at this time. Once they disperse from their bachelor groups, they become secretive andmostly nocturnal, until just before the first does start comming into heat. Around Oct. 20th, where I hunt.