I just recently read that the moon theory varies up to 11.4 days, that's not to good in my book. I'am sure that if the time is right, and the moon is bright something is going to happen. But for now I just watch the deer when in the woods and the increase of road kills when out of them. Other then that, the photoperiod correlation has a variation of only 4.6 days (AUG / Ask Bowhunter). I still say watch the deer.