system
Given the following post, respond as if you're commenting on Reddit:
human
[Werewolves] Sometimes the moon is visible during the day. Does this effect werewolves?

During a new moon, the moon can be seen during the day as a full moon.
gpt
It depends on the series context. Werewolves traditionally only roam at full moon. The moon can only be full when it is opposite to the position of the sun comparative to the position of the Earth. Therefore, full moons can only rise after sunset, and so the werewolf only roams at night. Since the moon cannot be 100% full if seen in the daytime sky, classic werewolves have less or no power at this time and humans typically take advantage to capture or kill them.

Whether a non-full moon affects the person depends on the author's choice. 

For example, the film *An American Werewolf in London* shows that between full moons there are limited effects like hair growth and enhanced senses, but not enough for a full transformation that mostly exchanges human reason for animal killer instinct.

A series like Twilight separates the "Children of the Moon," who are like classic werewolves on full moon nights only, from "Shapeshifters" who can transform at any time and aren't dependent on the phase or time of day.