The Hebrew calendar is a lunisolar calendar used by Jews to determine the dates of religious holidays and to regulate the agricultural year. The Hebrew calendar is based on the cycles of the moon and the sun, and it consists of 12 months, each of which is either 29 or 30 days long. The year begins in the spring, and the months are named after the seasons and agricultural activities.
The Hebrew calendar is an important part of Jewish life, and it is used to determine the dates of religious holidays, such as Passover, Rosh Hashanah, and Yom Kippur. The calendar is also used to regulate the agricultural year, and it is used to determine when to plant and harvest crops.