Hair & the moon?

I know that it is tradition not to cut one's hair in the first few days of the (Chinese) new Year, so as not to cut one's luck away. The year of the Rat starts on February 7th this year.

I have no idea what traditions went into Anthony Morrocco's Lunar Haircutting Charts that include a "best hair cutting days" schedule - where a "lengthening" cut is "good on February 8-10.