I recently read about the 5 days at the end of the Aztec year that were apparently considered "unlucky" by the population. Is this concept valid in any way? And if so would the birth of a child during this period be given any special significance relative to the rest of the year?

I did some googling and all I could find was 2 sentences on Wikipedia saying that the Nemontemi was unlucky.

Sorry for the random question, was just in the shower when it popped into my head.

This is my first post on this sub so if I'm breaking any rules I apologize in advance :)