Those are the same as the "solunar tables" used for fishing. They are based on moon conditions, especially when the moon is directly overhead or underfoot. Many years ago I tested this idea against observation data and found no correlation, but I really need to run that analysis again, as I haven't done so in years and I now have much more observation data than I did the firsat time.
But I'm quite suspect of the idea. Fish are much less complex animals that can be triggered to feed by more "instinctive" processes. In addition, fish are sensative to tides and gravitational pull, while little data exists supporting the idea that mammals are influenced by the gravitational pull of the moon.