The word of ruzname means diary in the Persian language. In the historical records it refers to special diaries written by the secret clerks of Ottoman sultans. Apart from that there are various different types of ruznames. In some ruznames were described repetitious behaviors that they are a suitable or an unsuitable for each day of the week or month. This article aims to investigate a manuscript named "The Book of Ruzname" contains suitable and unsuitable behaviors for each day of month.