'Night' in the Bible

"Go and gather all the Jewish people who are in Susa and fast for me. Don't eat or drink for three days, night or day. Both I and my young women will also fast in the same way, and then I'll go in to the king, even though it's against the law. And if I perish, I perish."

That night the king could not sleep, so he gave instructions to bring the book of records, the chronicles, and they were read to the king.