I have to book my Oct/Nov holiday in Jan/Feb. So every year I spend hours upon hours analyzing the moon and comparing to past hunts, so I can book off the prime week. I end up going back to focus mostly on the amount of daylight time, so I now just pick the same week every year now. Then I hope that there will be barametric pressure changes that week so that they move more during the day rather than just at night. The same week with full moon or no moon, during years with similar weather, was about the action.