The Hebrew calendar has played a significant role in the lives of Jewish people for thousands of years. It is based on the lunar cycle and is used to determine the dates of important religious festivals and observances. The Hebrew calendar is also known by several synonyms, such as the Jewish calendar, the Hebrew lunar calendar, and the lunisolar Hebrew calendar. It is also referred to as the Hebrew civil calendar to distinguish it from the Hebrew religious calendar, which is used for determining the dates of religious ceremonies. Furthermore, the Hebrew calendar is also occasionally called the Jewish lunar calendar or the biblical calendar due to its religious significance.