'Night' in the Bible

"Go, gather all the Jews that are found in Susa and fast for me; do not eat or drink [for] three days, both night and day. I and my young girls will fast likewise, and then I will go to the king, which [is] not according to the law; if I perish, I perish.

During that night the king's sleep escaped [him], and he gave orders to bring the {scroll of records and chronicles}, and they were read before the king.