Werewolves and the moon cycle
We humans know, for the most part, that The Moon Cycle is the different phases that the moon undertakes at different times of the month. We also know that the moon is important in multiple ways and how powerful it can be. Not only is this true for humans, but for werewolves (yes, werewolves) as well!
The moon influences many things, such as the tides in the oceans. The Moon also has its lasting effects on werewolves. It is well known the full moon is a very big influence during the changing of werewolves.
Usually the changes happen 24 hours before, during, and after the full moon, this could be because of the gravitational pull or even because of the moonlight. Either way, the moon is important to not only humans but also big, hairy beasts.