The solunar theory is a hypothesis that animals and fishes move according to the location of the moon in comparison to their bodies. The theory was laid out in 1926 by John Alden Knight, but was said to be used by hunters and fishermen long before the time it was published.
In May 1926, John Aldenn Knight put together some fishing folklore and other fishing factors such as the sun and the moon, hence the name Solunar (Sol for sun and Lunar for moon) to form a theory on the patterns of animal movement. Knight compiled a list of factors which control or influence the day-to-day behavior of many freshwater and saltwater fish. Each one of the 33 different factors were considered. All but 3 were rejected. The three factors retained were the sun, the moon and the tide. For salt water fishing, tides have long been known as a factor which control fishes' behavior. As Knight's research progressed, he found that rather than just tides themselves, the relationship of the moon and sun's positions relative to each other may be the determining factor. In addition to the time of moon up (moonrise) - moon down, his research determined that there were intermediate times of the day that occurred in between the two major periods. From that he establishes that there were major periods (moon up - moon down) and minor periods. Knight published the first Solunar table in 1936.
HuntFishSport Solunar calendars are calendars that fishermen and hunters use to determine the best days of the month and times of the day for catching fish and hunting game. For fishermen, the tides, sunrise and sunset are helpful times of the day to know when the fish are going to bite. For hunters, the tides are not a factor. Hunters use the sun and the moon to determine when the game will be moving the most. "Other conditions not being unfavorable, fish will feed, animals will move about, birds will sing and fly from place to place, in fact, all living things will become more active, more alive, during Solunar periods than at other times of apparent equal value. ...anglers have found that it is a guide to the best fishing of each day, and the quality of their sport has improved.". Using these calendars, a fishermen and a hunter can tell when the moon is directly underfoot and overhead. The strongest activity occurs when there is a full moon or a new moon and is weakest when there is a quarter moon and a three quarter moon. This is because the moon and the sun's gravitational force is strongest when directly above or directly below our head. The lunar data HuntFishSport aggregates is better now because of the newer technology like GPS technology. This new technology has allowed the HuntFishSport Solunar Theory calendars to generate hunting and fishing times with much greater precision.