There's a full moon tonight. Have you heard that old wives tale that if you cut your hair on a full moon it will grow faster? Well, I grew up scheduling my haircuts around this myth. So I couldn't tell you if my hair ever grew faster than cutting it on a crescent moon day, I had no frame of reference.
Nowadays, I don't worry about the moon when I make my hair appointments. It has more to do with whether I can get a comb through my hair and if I can't it's time for a trim. But the full moon method was much more fun.