It says in Ester "בערב היא באה", "in the evening she would arrive", and we learn many important halachos of Purim from that. I wonder, then: are there any laws or customers specific to the night of Purim? Of course, we read Ester by night, but we do that by day also; I'm looking for something unique to the nighttime.

#This question is Purim Torah and is not intended to be taken completely seriously. See the Purim Torah policy.#